4.10 RIGHT OF WAY
4.11 INSTALLATION OF RIGHT‑OF‑WAY MARKERS
The Department's right‑of‑way marker consists of a #15 metric size (5/8 inch) reinforcing bar with a metal Iowa DOT survey cap placed on top. If existing right‑of‑way rails protrude above ground, rails should be carefully driven flush or to a maximum of 75 mm (3 inches) below ground.
Location of Markers
Right‑of‑way markers shall be set accurately on the following points:
n At each angle or offset in right‑of‑way line
n At apparent intersections of railroad or county right‑of‑way line
n At beginning and end of each curve plus intermediate points on long curves where necessary
n At apparent intersection of government land lines
n At apparent intersection of city street right‑of‑way lines
n At lot line intersections in cities if lot corner was in place prior to construction
Block corners at city street intersections must be referenced out if available. This will simplify setting a pin on the apparent intersecting street right‑of‑way line and projecting the new right‑of‑way line from street to street for proper location of sidewalks or retaining walls.
A witness sign is placed adjacent to a permanent right‑of‑way marker to assist in marker location. Iowa DOT uses a 100 x 225 mm (4 x 9 inch) white sign with black letters, "R O W". The witness sign is mounted on a delineator post so that top of sign is about 1.2 m (4 feet) above ground.
Witness signs should not be used in the following areas:
n Developed residential areas (urban, suburban, or rural)
n Developed commercial areas in urban and suburban locations
n Schools and churches in urban areas
n Frontages of rural homes or churches where sign presence would detract from the lawn aesthetics
Refer to Appendix 4‑1 for Iowa DOT warehouse stock numbers for survey markers.