Adding lanes going up to the bridge, which can’t be widened, creates a bottleneck at the approach. coming off the bridge into BR is a problem, so remove Washington exit (Dalrymple is right there and Terrace will serve i110) and make 2 dedicated lanes off the bridge.
Traffic Analysis shows that two lanes are required on I-10 Eastbound from the Bridge and two lanes are required from I-110 Southbound to I-10 Eastbound. This configuration makes up the proposed four through lanes on I-10 Eastbound east of the I-10/I-110 Interchange. Alternatives to the College Drive interchange were considered in the Stage 0 Feasibility Study and did not move into the Stage 1 study due to environmental impacts.