Orange Country Transportation Authority

Orangethorpe Undercrossing
The Orange County Transportation Authority (OCTA) will reconstruct Orangethorpe Avenue as a bridge to allow vehicles to pass over the BNSF Railway tracks to separate rail and roadway traffic. On the west side of the project, Crowther Avenue and Miller Street will rise to meet Orangethorpe Avenue, which begins to ascend approximately 500 feet west of Miller Street. On the north side of the project, Chapman Avenue rises to meet the elevated portions of Orangethorpe, which lowers back to street level approximately 800 feet east of Chapman.

The project will be constructed in phases allowing Orangethorpe to remain open (one lane in both directions) during construction.

When completed, the project will allow cars to cross over the railroad tracks, improving safety and removing delays, and eliminating the need for train horns to sound.