Office of Federal Lands Highway

RABIT robot deployed to determine the rate of deck deterioration for the Memorial Bridge and Windy Run Bridge on George Washington Memorial Parkway.

The Gila River Indian Community under the Tribal Transportation Program successfully uses steel-on-steel lateral slide construction for the Sacaton Bridge replacement saving commuters 4 to 6 months of detour delays.

The Kaw Nation replaced four substandard structurally deficient bridges near Blackwell, Oklahoma using the Geosynthetic Reinforced Soil - Integrated Bridge System. Estimates conclude the structures were built for $40,000 less than their typical $100,000 sheet pile abutment structures and in several weeks less time.

Use of Geogrid Reinforced Soil (GRS) construction was utilized to repair a major landslide along the Blue Ridge Parkway in Buncombe County, North Carolina. The geogrid repair resulted in a smaller footprint/less environmental disturbance and reduced construction time and materials.

A prefabricated steel truss and precast concrete abutments was placed on micropiles as part of the trail system within the Delaware Water Gap National Recreation Area. Installation time saved was likely in the order of 10 days for the abutments alone and resulted in minimal disturbance to the surrounding area.

Nondestructive geophysical investigations including ground penetrating radar to image the extent of potential lava tubes and blisters under a proposed escape route for the town of Pahoa near Kilauea Volcano on the Big Island of Hawaii.

A unique helical pile foundation design pedestrian/bicyclist timber bridge located on the Mount Vernon Trail of the George Washington Memorial Parkway to minimize disturbance in the wetland areas.