Category Archives: Highways

Traffic Alert: State Route 12 Closure – 9:00 PM Friday, June 24 to 4:00 AM Monday, June 27

Caltrans is continuing work on a project to replace the bearing pads of the State Route 12 (SR-12) Potato Slough Bridge located near the Tower Park & Terminous communities, west of Interstate 5 (I-5) in San Joaquin County. This project … Continue reading

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Grand Island Road (approximately .5 miles north of the J-Mack Ferry crossing) will be closed 24-hours a day for approximately two to three months. 

Reclamation District No. 3 (RD 3) is alerting motorists that a section of northbound and southbound lanes of Grand Island Road (approximately .5 miles north of the J-Mack Ferry crossing) will be closed 24-hours a day for approximately two to … Continue reading

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State Route 239 Project News – Public Scoping Open House

READY FOR VISITORS – SR 239 ONLINE PUBLIC SCOPING OPEN HOUSE Caltrans has released a Notice of Preparation (NOP) for an Environmental Impact Report (EIR) for the State Route 239 project and is seeking your input. We continue to engage … Continue reading

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Contra Costa Transportation Authority East County Integrated Transit Study

Why study transit, and why now? East County’s population is growing! East County’s population has grown by over 100,000 people in the past decade. There has also been a surge in super-commuters – people whose commute is more than 90 … Continue reading

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State Route 239 – Update

SR239 is a legislatively adopted, but unconstructed, route in the California state highway system. First identified in 1959, the legislative language describes SR239 as a potential roadway linking SR4 in Brentwood to Interstate 205 (I-205) or I-580 west of Tracy … Continue reading

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UPDATE: SR-84 Real McCoy Ferry remains out of service; scheduled to return by early June 2020

The State Route 84 (SR-84) Real McCoy Ferry will continue to be out of service as crews continue to make repairs on the ferry after an unexpected mechanical failure occurred in April 2020. The ferry is anticipated to return to … Continue reading

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Highway 37 issues coming into focus

Flooding is again bedeviling Highway 37 in the North Bay, but a plan to improve the stretch of roadway is in the works. A memorandum of understanding among several agencies is being worked on with a goal of providing relief for Highway … Continue reading

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I-680/SR4 Interchange Improvements – Phase 3

The contract has been awarded, construction should start this year and be completed spring of 2022. The 680/4 Phase 3 project will widen State Route 4 in the median to provide a third lane in each direction from Morello Avenue … Continue reading

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New Report Finds Lack of Safety Features on Roads Costs California Drivers $61 Billion Annually

CALIFORNIA KEY TRANSPORTATION FACTS THE HIDDEN COSTS OF DEFICIENT ROADS Driving on California roads that are deteriorated, congested, and that lack some desirable safety features costs California drivers a total of $61 billion each year. TRIP has calculated the cost … Continue reading

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Interstate 680 / State Route 4 Interchange Improvements

A recent headline announced that the California Transportation Commission approved $34 million in funding for upgrades to the Interstate Highway 680/state Highway 4 interchange. Concord Assemblymen Tim Grayson was active in securing this funding. Because of the size of the … Continue reading

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Commute Times and Congestion at All-Time Highs

Experienced Bay Area drivers know it’s a good idea to build in some extra time as a cushion against heavier-than-normal traffic or other unforeseen events. This cushion is known as a buffer time index, or BTI. Transportation planners represent BTI … Continue reading

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Laser-equipped Drone Helps Improve Safety and Efficiency on Highway 4 Improvement Project

The Contra Costa Transportation Authority (CCTA) and Alta Vista Solutions showcased two emerging technologies on a construction project aimed to improve commutes on Highway 4. Engineers are piloting drones equipped with light detection and ranging (LiDAR) lasers–a surveying tool that … Continue reading

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Explore the Highway 4 Story Through Images

The Contra Costa Transportation Authority (CCTA) announces today the official launch of Story Through Images, a web feature devoted to celebrating the recently-completed Highway 4  Widening Project and ongoing BART construction project, a $1.3 billion investment in infrastructure in Eastern … Continue reading

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Is Every Speed Limit Too Low?

By Alex Mayyasi · Priceonomics When Lieutenant Gary Megge of the Michigan State Police attends a meeting, he sometimes asks, “How many of you broke the speed limit on your way here?” Hearing his question, you might assume that Lt. … Continue reading

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Bay Area Freeway Patrol Joins Waze Connected Citizens Program

The Metropolitan Transportation Commission (MTC) has entered into a data-sharing partnership between its Service Authority for Freeways (SAFE) unit and Waze (http://www.waze.com), the free, real-time crowdsourced navigation app, in which MTC-SAFE’s Bay Area Freeway Service Patrol (FSP) and Waze each … Continue reading

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GoMentum Station and Honda Offer Demo of Autonomous Vehicle Technology

GoMentum Station, in coordination with the Contra Costa Transportation Authority (CCTA) and its partners Honda and the City of Concord, showcased Honda’s automated vehicle testing program at GoMentum Station, the largest secure Connected Vehicle (CV) and Autonomous Vehicle (AV) proving … Continue reading

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The 10 worst commutes in the Bay Area and Highway 4 is not on the list

1: I-80 westbound from SR-4 to the Bay Bridge 2: I-880 southbound from I-238 to SR-237 3: US-101 southbound from Fair Oaks Avenue to Oakland Road 4: US-101 northbound/I-80 eastbound from I-280 to the Bay Bridge 5: I-680 northbound from … Continue reading

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They’re Open – State Route 160/Highway 4 Direct Connector Ramps

The existing State Route 160/Highway 4 interchange previously included only two of the four possible interchange movements. The State Route 160/Highway 4 Direct Connector Ramps project created a much-needed connection between the Senator John A. Nejedly (Antioch) Bridge and Highway … Continue reading

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June 2015 – SR 4/SR 160 Connector Ramps – a Pictorial Update

When completed in early spring 2016, the SR 160 – SR 4 Connector Ramps will connect west bound SR4 with north bound SR160 without diverting traffic through Oakley roads. The project will feature sound wall extensions and new retaining walls … Continue reading

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SR 4/SR 160 Connector Ramps a Pictorial Update – February 2015

The existing State Route 160/Highway 4 interchange currently includes only two of the four possible interchange movements: the eastbound Highway 4 to northbound State Route 160 connector ramp, and the southbound State Route 160 to westbound Highway 4 connector ramp. … Continue reading

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