SR-91 Westbound PA/ED and PS&E (from Shoemaker Avenue to I-605/SR-91 Interchange)
SR-91 experiences a high level of congestion as travelers approach I-605. Advanced Civil Technologies is delivering improvements to accommodate traffic approaching the SR-91/I-605 interchange.
In the cities of Cerritos and Artesia, WB SR-91 struggles with significant congestion as over 100,000 vehicles travel this highway daily. Though many segments of SR-91 experience high traffic volumes, congestion on this corridor is exacerbated by the nearby SR-91/I-605 interchange. Inadequate capacity of the existing two-lane connector between WB SR-91 and NB/SB I-605 regularly causes traffic to queue onto SR-91. Additionally, frequent weaving due to closely spaced on-/off-ramps contributes to congestion. Traffic levels are forecast to increase, and improvements are necessary to maintain the safety and efficiency of this corridor.
The improvements proposed by this project are being designed to reduce congestion at the SR-91/I-605 interchange.
To alleviate congestion and accommodate future traffic needs, Metro has proposed widening approximately 3 miles of WB SR-91 between Shoemaker Avenue and the SR-91/I-605 interchange. The project will add one new mixed flow lane that begins at Artesia Boulevard and continues through the connector to NB I-605, improving capacity at the SR-91/I-605 interchange. The project will also modify the Norwalk Boulevard and Pioneer Boulevard interchanges to create Type L-7 interchanges, increasing weaving lengths throughout the project area. Advanced Civil Technologies supported this project through the PA/ED and PS&E phases. Our staff was responsible for preparing the construction staging/traffic handling plans, electrical plans/details, overhead sign concept, and TMP. Additionally, we prepared the Project Report and are currently developing cost estimates and construction area sign plans during the PS&E phase.
Our team has been committed to delivering a project that is community-sensitive and minimizes impacts to existing traffic volumes. Construction staging was carefully developed to accommodate current traffic levels, maintaining the existing carpool lane and four general purpose lanes during construction. Ramp improvements will be constructed in two stages, allowing the ramps to remain operational by utilizing traffic shifts. Finally, many of the local streets near the project are narrow, offering limited capacity. The team worked to understand potential impacts to these streets, allowing them to determine temporary traffic corridors that will maintain traffic levels and minimize community impacts.
Close coordination with Metro and Caltrans District 7
Construction staging that accommodates existing traffic levels
Close coordination with Metro and Caltrans District 7
Construction staging that accommodates existing traffic levels
Featured Expertise
Electrical Systems Design
TMP
