Travel impacts for the weeks ahead include the following:
SUN (9/29) through MON (9/30) 11 p.m. - 5 a.m. and MON (9/30) 9 a.m. - 3 p.m. On northbound US 183, the far left turn lane at SH 29 will be closed. Drivers may continue to turn at the signalized intersection. Please use caution while driving.
MON (9/30) through TUES (10/1) 8 p.m. - 5 a.m. and TUES (10/1) 9 a.m. - 3 p.m. On southbound US 183, the left lane will be closed for several thousand feet from beginning north of SH 29. Please use caution while driving.
MON (9/30) through FRI (10/4) 9 a.m. - 3 p.m. On westbound SH 29, the dedicated right turn lane onto US 183 will be closed. Drivers may continue to turn at the signalized intersection. Please use caution while driving.
TUES (10/1) through FRI (10/4) 8 p.m. - 5 a.m. On the northbound 183A frontage road, the left lane will be closed for several thousand feet south of San Gabriel Parkway. Please use caution while driving.
TUES (10/1) through WED (10/2) 5 p.m. - 5 a.m. The northbound to southbound u-turn at San Gabriel Parkway will be closed. Drivers may continue to use the signalized intersection to turn around.
TUES (10/1) through WED (10/2) 8 p.m. - 5 a.m. and WED (10/2) 9 a.m. - 3 p.m. On southbound US 183, the left lane will be closed from Seward Junction Loop to Whitewing Drive. Please use caution while driving.
WED (10/2) through THUR (10/3) 8 p.m. - 5 a.m. On the southbound 183A frontage road, the left lane will be closed from Bryson Ridge Trail to south of San Gabriel Parkway.
WED (10/2) through THUR (10/3) 5 p.m. - 5 a.m. The southbound to northbound u-turn at San Gabriel Parkway will be closed. Drivers may continue to use the signalized intersection to turn around.
WED (10/2) through THUR (10/3) 8 p.m. - 5 a.m. and THUR (10/3) 9 a.m. - 3 p.m. On southbound US 183, the left lane will be closed from Green Valley Drive to Bryson Ridge Trail. Please use caution while driving.
WED (10/2) through FRI (10/4) 8 p.m. - 5 a.m. On northbound 183A, the mainlanes will be closed from the RM2243/Hero Way off ramp to just south of San Gabriel Parkway where 183A Toll merges with US 183. 183A Toll drivers will be directed to exit at the RM2243/Hero Way off ramp where they’ll be able to continue traveling north using the frontage road system. Please use caution while driving.
WED (10/2) through THUR (10/3) 11 p.m. - 5 a.m. The crossing at Whitewing Drive/Larkspur Park Blvd will be closed nightly. Drivers may use the crossings at Seward Junction Loop and Green Valley Drive to turn around.
THUR (10/3) at 8 p.m. The 183A Phase III Project will open the new northbound 183A Toll off-ramp north of Hero Way. The new ramp will be one-lane, located roughly 1000 ft. south of its original location. This is the final configuration of this off-ramp as part of the 183A Phase III Project, allowing for the 183A Toll extension and the addition of an entrance ramp south of San Gabriel Parkway. Both a schematic and illustrated map of the project's final configuration are available to view at 183a.com/resources.
Ongoing, long-term travel impacts include the following:
The southbound to northbound u-turn at Hero Way is closed. Drivers may continue to turnaround at the signalized intersection.
Traffic along northbound US 183 has shifted permanently onto new lanes beginning south of CR 258. Two lanes of traffic have been maintained. New traffic signals at the intersection of US 183 and CR 258/CR 213 will cotninue to operate in a temporary flash setting. Drivers on US 183 should be prepared to yield to crossing traffic. View a map here.
The northbound to southbound U-turn south of SH 29 is closed. Drivers are advised to use either turnarounds at Seward Junction Loop or north of SH 29 to access southbound US 183.
The pedestrian crosswalks at the intersection of SH 29 and US 183 are closed. The Project includes pedestrian improvements at this intersection such as the addition of sidewalks and upgraded signalized crossings. View a map here.
*Please note:
Construction activity will occur throughout the entire corridor simultaneously until completion of the project, anticipated in early 2025.
Construction will take place primarily within the existing US 183 median and right-of-way, minimizing impacts to the traveling public. However, the community should remain prepared for:
While construction is an inherently disruptive process, we make every effort to minimize the impacts as much as possible. Mitigation measures on the 183A Phase III Project include:
We do our best to communicate traffic impacts to the public in advance of work through weekly email notices, twitter, and other direct channels. However, shifts in scheduled activities do occur so project traffic impacts are kept up to date on this page.
Reminder: The corridor is an active construction zone. Please do not park or walk within the median or along the sides of the roadway, including the area around the San Gabriel River. Thank you for your cooperation.
View our 183A Phase III Construction Guide for more information on what to expect during construction. For any questions or concerns about construction activities, please reach out to the Project Team directly through our contact form or by phone at (512) 340-1111.
We thank you for your patience as we work as quickly and as safely as possible.
