Route 91 Pachappa Underpass

Status: Completed

Location: Western Riverside County

Type of Project: Highways

Location: Route 91 north of Central Avenue in Riverside

Construction: Spring 2020 to October 2021

Investment: $8.8 million (construction)


The Riverside County Transportation Commission is building the Route 91 Pachappa Underpass in Riverside. The project will include construction of a retaining wall and removal of part of an overhead railroad bridge. Construction began in April 2020 and was completed in October 2021.

Construction contract was approved at the November 13, 2019 commission meeting.  Work began in April 2020 and was completed in October 2021.

This project includes work that was deleted from the Caltrans Route 91 High Occupancy Vehicle (Carpool Lane) Project. In December 2016, the Commission approved the removal of this work from that project and authorized this separate Pachappa Underpass Project. Most of the work consists of removing the Pachappa Underpass temporary bridge and its associated retaining walls and building a new retaining wall to support the final Union Pacific Railroad alignment.