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The $ 475 million improvement project is adding one regular lane and one carpool lane along the busy corridor traveled by more than 260 , 000 vehicles every day ORANGE As part of the ongoing improvements being made to SR - 55 between I - 5 and I - 405 , full nighttime freeway closures are planned for Friday , April 26 , and Saturday , April 27 , and drivers are encouraged to avoid the area or plan ...

Construction Management Support Services for the State Route 91 Improvement Project between State Route 55 and Lakeview Avenue

The Orange County Transportation Authority ( OCTA ), in partnership with the California Department of Transportation ( Caltrans ), is improving State Route 91 ( SR - 91 ) from State Route 57 ( SR - 57 ) to State Route 55 ( SR - 55 ). OCTA and Caltrans are working with the neighboring cities of Anaheim , Orange , Placentia , Fullerton and Yorba Linda .

Traveling by trolley and by rail each make it easy and economical to explore all that Orange County has to offer during the warm summer months . Riders can enjoy seamless connections , scenic views , and stress - free transportation .

The 91 Express Lanes travel through portions of Orange and Riverside countries and toll charges vary .

Overview The 91 Express Lanes is a four - lane , 18 - mile toll road built in the median of State Route ( SR )- 91 between the SR - 55 / SR - 91 interchange and the SR - 91 / Interstate ( I )- 15 interchange . Customers may drive the entire length or enter or exit at the county line near Green River Road .

Regular Routing Route 037 / 033125 Numbers on streets indicate transfers . N MAP NOT TO SCALE

Efective February 9 , 2025 The Bus Service Change Improvements provides a summary of the upcoming service improvements to OC Bus . This service change will provide minor schedule changes to improve service quality . Route adjustments will be made to Routes 89 and 177 to provide service to areas afected by the discontinuation of Routes 82 and 87 .