Design Guides and Issues


Two significant traffic trends, higher volumes and increased speeds, are dramatically redefining the maintenance responsibilities. More time is spent on accident clearing and repairing damaged safety features such as guardrail end-treatments, guardrail, and light poles.

Average daily traffic counts for the five major freeways, on a district wide basis, range from 100,000 to 300,000 vehicles per-day (vpd). One of the busiest segments is on the I-10 east of the tunnel under Margaret T. Hance Park.