Highway Construction

  • Current projects
  • Future projects
  • Traffic and road closures

Current projects


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County Route Project
Polk Interstate 35/80 in Polk County Resurface I-35/80 from the Iowa 141 interchange east to just west of the Merle Hay Road interchange.
Polk Interstate 35 in Polk County Capacity improvement on I-35 continues with the construction of new northbound lanes between the I-35/I-80/I-235 interchange and Raccoon River bridge.
Hamilton Interstate 35 in Hamilton County A Portland cement concrete (PCC) reconstruction project on southbound I-35 from 1 mile north of Iowa 175 north to 2.5 miles south of U.S. 20.
Polk Interstate 80/U.S. 65 in Polk County Work continues on I-80 near Altoona from the U.S. 65 bypass to east of the I-80/U.S. 65 interchange.
Polk and Jasper Interstate 80 Polk and Jasper counties Replace inside paved shoulders on I-80 in both directions from west of Polk County Road S-14 to Iowa 117 in Colfax, in Jasper County.
Poweshiek Interstate 80 in Poweshiek County Replace inside paved shoulders of I-80 in both directions from 1.1 miles east of U.S. 63 to 0.35 mile west of Iowa County Road V-38 interchange (exit 205).
Polk U.S. 6 (Euclid Avenue) in Polk County Replace the U.S. 6 (Euclid Avenue) bridge over Fourmile Creek, 1.2 miles east of Interstate 235.
Hamilton U.S. 20 in Hamilton County Resurface U.S. 20 in both directions from the west junction of Iowa 17 east to the east junction of Iowa 17 in Webster City, as well as the section of U.S. 20 through the U.S. 69 interchange.
Poweshiek U.S. 63 in Poweshiek County Portland cement concrete resurfacing of U.S. 63 from the north city limits of Montezuma to just south of Interstate 80.
Polk U.S. 65 in Polk County Construction of two pairs of overflow bridges on southbound U.S. 65 near the Des Moines River.
Story U.S. 65 in Story County Reconstruction of U.S. 65 through the city of Collins, includes replacing the abandoned railroad bridge at the south end of the city.
Polk Iowa 415 in Polk County Repair Iowa 415 mile-long bridge.
Black Hawk Interstate 380 in Black Hawk County Resurface I-380 in Waterloo from the west edge of the Cedar River bridge to Mitchell Avenue.
Black Hawk U.S. 63 in Black Hawk County Work continues on the two-year U.S. 63 reconstruction from Newell Street to Donald Street at the north edge of Waterloo.
Wright U.S. 69 in Wright County Bridge replacement on U.S. 69, 5 miles north of Iowa 3, including 0.5 mile of grading and paving.
Kossuth U.S. 169 in Kossuth County Portland cement concrete (PCC) overlay project on U.S. 169 from Iowa 9 north to the Minnesota state line.
Floyd and Bremer U.S. 218 in Floyd and Bremer counties Adding 4-foot hot-mix asphalt paved shoulders on U.S. 218 from Charles City to Janesville.
Black Hawk Iowa 281 in Black Hawk County Replace the Iowa 281 bridge over Poyner Creek, 2.3 miles north of the Iowa 281/Black Hawk County Road D-20 junction.
Woodbury Interstate 29 in Woodbury County Reconstruct the I-29/Woodbury County Road D-51 interchange 1.8 miles north of Salix.
Clay U.S. 18 in Clay County Reconstruct the bridge on U.S. 18 over the Ocheyedan River 2.3 miles west of Clay County Road M-27.
Woodbury U.S. 20 in Woodbury County Grade the westbound lanes of U.S. 20 from east of Moville to Minnesota Avenue, 3.5 miles west of Correctionville.
Cherokee U.S. 59 in Cherokee County A Portland cement concrete overlay project on U.S. 59 from the Ida County line north to the city of Cherokee.
Humboldt Iowa 15 in Humboldt County Reconstruction of bridge on Iowa 15 over the West Fork of the Des Moines River, 0.4 miles west of Humboldt County Road P-19.
Ida Iowa 175 in Ida County Reconstruction of Iowa 175 through the town of Battle Creek.
Harrison 183 in Harrison County Reconstruct the bridge on Iowa 183 over the Soldier River, 0.9 miles north of Pisgah.
Adair Interstate 80 in Adair County Install high-tension cable guardrail in the median at several locations along the project route.
Cass Interstate 80 in Cass County Replace I-80 westbound bridge over Indian Creek at milepost 50 (west of the Marne interchange).
Dallas Interstate 80 Alice’s Road interchange in Dallas County Construct interchange ramps and additional truck parking at the weigh station.
Mills U.S. 34 (Missouri River bridge) in Mills County Construction continues of new bridge and four-lane highway on U.S. 34 over the Missouri River west of Glenwood.
Adams U.S. 34 in Adams County Replace bridge over the Platte River 1.3 miles west of Iowa 25.
Dallas and Polk Iowa 141 in Dallas and Polk counties Partially pave the existing outside and inside granular shoulders on Iowa 141 from just north of Iowa 44 in Grimes north and west to Iowa 17 in Granger with 6-foot wide hot-mix asphalt shoulders.
Guthrie Iowa 141 in Guthrie County Replace the bridge on Iowa 141 over the Middle Raccoon River near Coon Rapids.
Guthrie Iowa 141 in Guthrie County Replace the bridge on Iowa 141 over Willow Creek located 2.1 miles west of Iowa 25.
Warren Interstate 35 in Warren County Construction continues on the southbound I-35 bridge replacement over the North River.
Warren Interstate 35 in Warren County Reconstruction of I-35 is from Clanton Creek to north of the Iowa 92 interchange. The project includes grading and northbound bridge replacement over the Middle River.
Warren Interstate 35 in Warren County Microsurface the north and southbound lanes of I-35 from the Clarke County line north to 2.5 miles south of Iowa 92.
Decatur Interstate 35 in Decatur County Continue a Portland cement concrete (PCC) grade and replace project on southbound I-35 will be from just north of Decatur County Road J-20 to the Decatur County line.
Lucas U.S. 65 in Lucas County A Portland cement concrete (PCC) overlay and PCC patching project on U.S. 65 from the Wayne County line north to U.S. 34.
Clarke Iowa 152 in Clarke County Replace the bridge on Iowa 152 over Interstate 35 north of Osceola, includes traffic signs and lighting.
Johnson Interstate 80 in Johnson County Resurface I-80 in both directions between the I-380 interchange and Iowa 965.
Johnson Interstate 80 in Johnson County Deck overlay work on the First Avenue bridge over I-80 in Coralville.
Johnson Interstate 80 in Johnson County Replace the northbound pavement at/through the Dubuque Street interchange.
Linn Interstate 380 in Linn County Resurface I-380 from U.S. 30 north to near Eighth Street Northeast in both directions, and also northbound I-380 from near Eighth Street north to Linn County Road E-34.
Dubuque U.S. 20 in Dubuque County Repair deck joint on the Julien Dubuque Bridge over the Mississippi River.
Dubuque U.S. 20 in Dubuque County Repair deck joint on westbound US. 20 (Dodge Street) bridge over Catfish Creek.
Linn U.S. 30 in Linn County Replace pavement from Stoney Point Road east to Edgewood Road.
Cedar and Clinton U.S. 30 in Cedar and Clinton counties Resurface U.S. 30 from Clarence to Calamus.
Dubuque U.S. 52/61/151 in Dubuque County Construction continues of U.S. 52/61/151 from U.S. 52 intersection to the Grandview Avenue interchange will replace the existing bridges spanning Catfish Creek and pavement along with improvements at the U.S. 52 intersection. Northbound lanes will be finished in 2014.
Washington and Johnson Iowa 1 in Washington and Johnson counties Hot-mix asphalt resurfacing of Iowa 1 and bridge repair projects from the west junction of Iowa 92 and Iowa 1 north to U.S. 218 in Iowa City.
Woodbury Interstate 29 in Woodbury County The goal of the Interstate 29 improvement project is to enhance the safety and operation of I-29 through Sioux City. The project corridor is divided into three segments.
Pottawattamie Interstates 29/80/480 and U.S. 275/Iowa 92 Interchange The Council Bluffs Interstate System Improvement Program is a comprehensive interstate redesign that will modernize the highway system and improve mobility and safety of approximately 18 miles of interstate.
Washington Iowa 1 in Washington County Hot-mix asphalt resurfacing with CIP recycling, patching, and bridge repair on Iowa 1 northerly from the DM&E Railroad overpass in Washington to Iowa 22 in Kalona.
Warren Interstate 35 in Warren County Construction continues on I-35 from north of Iowa 5 interchange south to Badger Creek. The project includes grading, paving, bridge replacements, signing, and lighting.
Scott Interstate 74 in Scott County Construction of the I-74 corridor, entending from the Avenue of the Cities in Moline, Ill., to 53rd Street in Davenport, Iowa.
Linn Iowa 100 bypass in Linn County Construction of a bridge over Iowa 100, work includes grading and paving between Ushers Ferry Road and Edgewood Road, along with reconstruction of the Iowa 100/Edgewood Road interchange to a single-point urban interchange.

Future projects

Five-year highway projects interactive map
View an interactive map that shows proposed highway projects for the next five years.

Planned highway investments
View proposed highway projects for the next five years. (PDF version)

Project-related public meetings
The items posted will remain until one month after the meeting date. The official project file is kept by the Iowa Department of Transportation’s Office of Location and Environment, 800 Lincoln Way, Ames, Iowa 50010.

Traffic and road closures

511 - Iowa traveler information
Connect to traveler information via the Web, Twitter, Facebook or mobile apps.

511 app for iPhone
Iowa 511 is the Iowa Department of Transportation's (DOT) official traffic and traveler information resource. The Iowa 511 app provides statewide real-time traffic information. Visit Apple iTunes to get this free app for iPhone and iPad.

511 app for Android
Iowa 511 is the Iowa Department of Transportation's (DOT) official traffic and traveler information resource. The Iowa 511 app provides statewide real-time traffic information. Visit Google Play to get this free app for Android.

511 on social media
Follow the Iowa DOT on Facebook and Twitter. Follow statewide, by region or by metro area.

Surrounding states traffic and road closures
Find road condition reports for states surrounding Iowa. Website links and phone numbers are also available.

Trip Planning

  • Aviation
  • Bicycle and pedestrian
  • Cars and trucks
  • Public transit
  • Rail

Aviation

Commercial air service
Iowa generates 2.5 million commercial service passenger boardings each year. Most of this demand is served at one of eight commercial service airports in Iowa or at nearby airports in neighboring states.

Learning to fly
Becoming a pilot opens up a whole new world of possibilities for business and personal travel, and in some cases, can even lead to careers in aviation. Take to the skies and see what you have been missing.

Public use airports in Iowa
Iowa has eight commercial service and 101 general aviation airports that are publicly owned. An additional eight privately-owned airports are open for public use.

Bicycle and pedestrian

Interactive Iowa bike map
This mobile-friendly map includes a starting and ending address search and overlays for trailheads, water, restrooms and bike shops.

Multiuse trails
View a listing of Iowa trails five miles or longer in length.

Trails of statewide significance
In 1989 the American Hiking Society envisioned a coast-to-coast multiuse trail that would link cities, towns, wilderness areas, forests and deserts. The American Discovery Trail (ADT) extends from Delaware to California and crosses 15 states. It is designated as a national trail.

Transportation Map for Bicyclists
View the latest Iowa Transportation Map for Bicyclists online.

Cars and trucks

511 traffic and road closures
Connect to traveler information via the Web, Twitter, Facebook or mobile apps.

Iowa Byways
Bypass traffic and experience a change of pace by traveling along Iowa's scenic and heritage byways. Iowa's nine state-designated and two nationally designated scenic byways are a great way to experience Iowa's natural beauty, history and culture.

Iowa Transportation Map
View the current Iowa Transportation Map online.

Rest areas
Find detailed amenities for all Iowa Interstate rest areas.

Traffic cameras
511's interactive overlay camera maps. Search for cameras along any travel route.

Weatherview
The Iowa DOT's interactive overlay map featuring information collected from Roadway Weather Information Sytem (RWIS), Automated Weather Observing System (AWOS) and Iowa DOT regional forecasts.

Public transit

Carpool/Vanpool
Find memberships and tools, carpool listings, travel listings and more at erideshare.com.

Intercity bus companies
Intercity bus service is an extremely valuable transportation resource for Iowa's citizens who do not drive or choose not to drive. This service allows them to reach destinations across the country. View online or print a map.

Iowa's Public Transit System Map
The Office of Public Transit's interactive map featuring current agency locations, contact information, service area, and website links.

Mobility coordinators in Iowa
View this coordinator contact map for Iowa regions. View online or print.

Public transit agencies
The Iowa DOT may only distribute state and federal public transit assistance to public transit systems that have been duly designated as a single administrative agency (transit system). There are 35 such public transit systems in Iowa.

Rail

Iowa's passenger rail
Rail passenger service in Iowa is currently provided by Amtrak on the California Zephyr from Chicago to Oakland, Calif., and the Southwestern Chief from Chicago to Los Angeles.

Maps

  • Aviation maps
  • Bicycle maps
  • Geospatial technologies
  • Motor carrier maps
  • Public transit maps
  • Rail maps
  • Road maps

Aviation maps

Heliport locations
Search detailed Iowa heliport information.

Public use airports in Iowa
Iowa has eight commercial service and 101 general aviation airports that are publicly owned. An additional eight privately-owned airports are open for public use.

Bicycle maps

Interactive Iowa bike map
This mobile-friendly map includes a starting and ending address search and overlays for trailheads, water, restrooms and bike shops.

Transportation Map for Bicyclists
View the latest Iowa Transportation Map for Bicyclists online.

Geospatial technologies

Geospatial applications
View topics including Highway Portal, I-Sites and Iowa DOT Travel Information.

Geospatial downloads and Web services
Iowa is one of the few states with a full Linear referencing System (LRS) on all public roads and statewide LiDAR. Iowa’s LRS gives the ability to locate with many methods, like mile point, and translate from one method to another. The LRS also stores accurate traveled way centerlines of over 114,000 miles of public road.

Motor carrier maps

All systems permit city and county maps
State and interstate highways are valid routes except for restrictions listed on the bridge embargo, detour and road embargo, and vertical clearance maps.

Bridge Embargo Map
Access the bridge embargo map and listings.

Enforcement Scale Sites Map

Iowa annual pavement restriction maps
Access the Iowa annual pavement restriction map and listings.

Vertical clearance map
Find vertical clearance updates, clearance log, diagrams and more.

Public transit maps

Intercity bus routes
Intercity bus service is an extremely valuable transportation resource for Iowa's citizens who do not drive or choose not to drive. This service allows them to reach destinations across the country. View online or print a map.

Iowa's public transit system
The Office of Public Transit's interactive map featuring current agency locations, contact information, service area, and website links.

Mobility coordinators in Iowa
View this map online or print.

Transit program administrators
View this map online or print.

Rail maps

Iowa rail service map

More rail maps
View the Iowa Railroad Base Map, Iowa Railroad Service Map, Chronology of Iowa's Railroad Abandonments and more.

State rail map

Road maps

Iowa Byways
Bypass traffic and experience a change of pace by traveling along Iowa's scenic and heritage byways. Iowa's nine state-designated and two nationally designated scenic byways are a great way to experience Iowa's natural beauty, history and culture.

Iowa Transportation Map
View the current Iowa Transportation Map online.

Other road maps
Available maps include the Transportation Map, state, county and city maps, and state, county and city traffic maps.

State, city and county maps
Download state, county, and city maps. MicroStation, AutoCAD, PDF and GIS Shapefiles are also available for all Iowa counties.

Safety

  • Distracted driving
  • Motorcycle rider safety
  • Safety and education
  • Safety programs
  • Seat belts
  • Statistics
  • Work zone

Distracted driving

Curb it - Click it
Each year in Iowa, an average of 400 people die in motor vehicle crashes; far too many. Learn about two of the riskiest driving behaviors – distracted driving and not wearing a seat belt.

Electronic device use brochure
Violations of the no use of electronic communication device provisions.

Prevent teen traffic deaths
Download the Iowa DOT 2008 legislative handout published Jan. 24, 2008.

Restrain Yourself videos
Audio and video entries submitted during the Restrain Yourself seat belt awareness campaign.

Motorcycle rider safety

Motorcycle crash history statistics
Find crash history statistics beginning in 1960.

Motorcycle rider education
Iowa has a quality Motorcycle Rider Education (MRE) Program administered by the Iowa DOT's Office of Driver Services. Iowa's MRE Program teaches Basic Rider Course (BRC) and the Basic Rider Course II (BRC II) of the Motorcycle Safety Foundation (MSF).

Motorcycle safety website
Find safety news, rider education, statistics, and links to related organizations. Home of the Iowa DOT's Motorcycle Safety Forum.

Safety and education

Bicycle and pedestrian education
The bicycle safety program is excellent for schools, police departments, parks and recreation departments, boys’ and girls’ clubs, boy scouts, girl scouts and anyone interested in promoting safe bicycling.

CarFit
CarFit was developed by the American Society on Aging in collaboration with AARP, American Occupational Therapy Association, and AAA.

Flashing yellow left-turn traffic arrows
The flashing yellow left-turn arrow signal is a new traffic management tool aimed at keeping traffic moving, increasing safety and reducing fuel consumption.

Flood safety
Explore the impact of the Flood of 2011, views videos and access flood resources.

Iowa driver's education instructors
Find Iowa driver education certification courses, course locations and contact information.

Iowa law on stopping for school buses
The greatest risk is not riding the school bus, but approaching or leaving it. So, children need to be especially careful around the school bus "danger zone," which is 10 feet in front, behind and on each side of the school bus.

Legal operation of snow mobiles
For safety purposes, it is recommended that snowmobiles be operated on private property with the landowner’s permission or on trails designed by the DNR for the operation of snowmobiles.

Move over or slow down law
Not just a courtesy, it’s the law. Move over or slow down to keep everyone safe!

Rail safety
Protecting the safety of motorists, pedestrians and train passengers is an important role of the Iowa DOT's Office of Rail Transportation. Toward that goal, the office manages a number of programs and activities that encourage safety.

Road rage
There is no national definition for the term "road rage". However, it is commonly defined as a societal condition where motorists lose their temper in reaction to a traffic disturbance.

Roundabouts
In recent years, roundabouts have been used in the United States to reduce crashes, traffic delays, fuel consumption, air pollution, and construction and maintenance costs.

Rumble strips
Rumble strips are grooved patterns placed in the pavement perpendicular to the direction of travel. They can be installed either at the centerline of the roadway or on the roadway shoulder. Learn more.

Rural road crashes
Crashes on rural roads occur at more than twice the rate of crashes on state roads. Driving too fast for conditions is the number one reason for rural road crashes.

Safe Routes to School
During the past two to three decades, there has been an incredible rise in obesity and physical inactivity in children and adults. The impact on health and health-care costs is high and will continue to rise dramatically.

Speed-change lanes
Conflicts are created along highways wherever driveways, intersections and other access points are introduced. These conflicts involve traffic traveling on the highway, crossing traffic, and traffic turning into or out of an intersecting roadway.

Winter driving
The Iowa Department of Transportation’s goal during the winter season is to return roads to reasonably near normal winter driving conditions as quickly as possible after a winter storm.

Safety programs

High Risk Rural Roads (HRRR)
The Safe, Accountable, Flexible, Efficient Transportation Equity Act: A Legacy for Users (SAFETEA-LU), established the Highway Safety Improvement Program (HSIP). A portion of the HSIP funds were allocated to the High-Risk Rural Roads (HRRR) Program. For Iowa, the HRRR Program provided approximately $1.15 million per year.

Horizontal Curve Sign Program
The intent of the Horizontal Curve Sign Program is to provide funding to counties for the purchase of curve warning and chevron signs. Funds can be used to reimburse counties for purchases of advance warning signs, advisory speed plaques, chevrons and arrows.

Iowa Strategic Highway Safety Plan (SHSP)
SHSP is a statewide-coordinated safety plan that provides a comprehensive framework for reducing highway fatalities and serious injuries on all public roads.

Overhead Flashing Beacon Replacement Program
The intent of the program is to provide funding to replace overhead flashing red and yellow beacons with stop sign mounted flashing red beacons for minor road traffic and yellow flashing beacons on the advanced warning signs for major road traffic.

Safe Routes to School (SRTS)
During the past two to three decades, there has been an incredible rise in obesity and physical inactivity in children and adults. The impact on health and health-care costs is high and will continue to rise dramatically.

Traffic Engineering Assistance Program (TEAP)
TEAP provides traffic engineering expertise to local units of government. The purpose is to identify cost-effective traffic safety and operational improvements as well as potential funding sources to implement the recommendations.

Traffic Safety Improvement Program (TSIP)
The Traffic Safety Improvement Program (TSIP) is defined by section 761, Chapter 164, of the Iowa Administrative Code. TSIP provides safety funds to cities, counties and the Iowa DOT in three separate categories.

Seat belts

Curb it - Click it
According to the National Highway Traffic Safety Administration (NHTSA), 80 percent of crashes and 65 percent of near-crashes involve some form of driver distraction occurring within three seconds before the vehicle crash.

Seat belt brochure
Iowa seat belt laws - questions and answers.

Seat belt medical exemptions
Exemptions to Iowa's safety belt law are allowed for certain medical reasons. Learn more.

Statistics

Crash data
Explore city, county and district data. Request data from the Iowa DOT.

Highway safety statistics
This section includes highway safety quick facts, and access to comprehensive statistics and research.

Seat belt surveys
View driver and crash statistics, and seat belt surveys beginning in 1998.

Vehicle registration statistics
View vehicle registration statistics by year, county and type.

Iowa work zone crash statistics
Current work zone crashes listed by highway system and crash severity.

Work Zone

Work zone fines
Current penalties for speeding in Iowa work zones.

Work zone safety
From spring to fall, the Iowa Department of Transportation (DOT) has up to 500 road construction and maintenance work zones around Iowa. Each year, work zone related crashes result in injuries, fatalities, and thousands of dollars in vehicle and property damage.
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