Rumble strips are a proven safety countermeasure to reduce rural roadway departures.
NDOT has identified federal HSIP safety funding for adding 2’ surface shoulders to rural two-lane roads with no existing surface shoulders. Local federal aid eligible roads are eligible for this safety funding. The specific criteria for eligibility are:
AADT of at least 1,000 vehicle per day in the design year
Rural two-lane undivided roadway with two-way traffic
Designated as federal aid eligible
The safety funded 2’ surface shoulder construction must include edgeline rumble strips, safety edge (aka beveled pavement edge), and centerline rumble strips. The new surface shoulder should be constructed with a mainline mill/fill project for pavement continuity. Only the surface shoulder widening, rumble strips, safety edge, and earthwork and ROW acquisition for the surface shoulder are eligible for safety funds. The mainline mill/fill costs are not HSIP eligible. If the existing roadway is less than 24’ wide, the widening of the pavement to 28’ total width with 12’ lane and 2’ surface shoulder in each direction would be eligible for safety funds.
No safety analysis is required. This safety funding is available as a systemic safety program to reduce roadway departure crashes on rural local roads.
HSIP funding will follow the current federal/local match policy which is typically 80% federal HSIP/20% local.
Interested agencies should contact Mitch Doht at mdoht2@unl.edu.
