Widening of the I 10: Stabilizing Retaining Walls along one of the longest Freeways

From the East coast to the West coast, Interstate 10 is one of the longest freeways in the USA. In order to reduce frequent traffic congestion, the California Department of Transportation is widening an approx. 9.7km (6mi) long section in the Californian city of Pomona in Los Angeles County by adding more lanes.

The construction of several  retaining walls was required for this project, 8 of which were soil nail walls and 2 were tieback walls.

For the soil nail walls, DSI USA supplied 11,025 DYWIDAG Soil Nails. 7,372 were double corrosion protected Grade 75 THREADBAR® in diameters of 25 to 36mm.

The remaining 3,653 were epoxy coated per ASTM A934 with a 0.90m (3ft) DCP section. In addition, 104 DYWIDAG Strand Anchors were installed in the 2 tieback walls.


California Department of Transportation, USA

California Department of Transportation, USA