COG proposes alternatives to Highway 25-156 roundabout

Caltrans not keen on overpass idea, citing safety and timetable concerns.

After almost a year after Caltrans proposed putting a roundabout at the intersection of Highways 25 and 156, the Council of San Benito County Governments (COG) continued to push back by suggesting alternatives at its Feb. 20 meeting. 

With the goal of having an overpass that coincides with the widening of Highway 25, COG contracted with WMH Corporation to develop interchange designs for a short-term project as alternatives to a roundabout. 

The roundabout is Caltrans’ temporary safety solution for the intersection, estimated to cost $10.7 million with a lifespan of about 10 years. The intersection became a priority for Caltrans because of its collision rate of 1.11 per million vehicles, more than double the state’s average of 0.5 per million. There were 126 collisions and two fatalities at the intersection between 2009 and 2018.

COG Executive Director Mary Gilbert presented two conceptual options at the meeting: having Highway 156 overpass Highway 25, or vice versa. 

Caltrans is adamant that they have no option other than to build the roundabout to minimize collisions. COG—comprised of two Hollister City Council members, two San Benito County supervisors and one San Juan Bautista City Council member—has sought the help of State Assemblyman Robert Rivas and State Senator Anna Caballero. 

Gilbert said COG members attended a meeting with representatives from Rivas’ and Caballero’s offices, County Resource Management Agency Director Harry Mavrogenes, County Administrative Officer Ray Espinosa and Caltrans to present the two options as the first phase of the project. 

“It’s a long-term solution,” Gilbert said. “One of the concerns the board expressed is that the roundabout is short-term; useful life would be about 10 years. This interchange, we made it consistent with the adopted future widening route and try to minimize throwaway costs.” 

Gilbert said the preliminary cost estimate is $38 million “plus.” The overpass requires about 35 acres of right-of-way acquisition at an estimated cost of $20 million, $3 million for the overpass, $10 million for environmental impact and final design, and $5 million for roadway costs. 

At this time, Gilbert said she could commit about $13 million to fund the project from an award by the state for passing Measure G in 2018 and $8 million from the measure itself. COG would target other state funds such as the State Highway Operation and Protection Program, Interregional Transportation Improvement Program and Trade Corridor Enhancement Program, as well as additional Measure G funds after 2021, and local traffic impact mitigation fees.

“This is really an accelerated project schedule. It’d be subject to when the funds are available,” Gilbert said. “We’d be looking at 48 months if we have to do a full environmental process. We’ve done some environmental on the 25 widening, but we have to refine that to a specific interchange.” 

The schedule is aggressive because the right-of-way acquisition and environmental process can take a long time, Gilbert said.

Caltrans District 5 Director Aileen Loe said Caltrans is reviewing COG’s overpass proposal, but said there are concerns that it’s short on time and dollars. 

“It mostly is a matter of time and bringing something to the public sooner. We can achieve the safety benefits with a roundabout much sooner. Even if we are all working in walkstep on the interchange, it will take some years longer and we feel that’s not a responsible action,” Loe said, adding that because of residents’ concerns over the roundabout, Caltrans is looking at design variations to eliminate potential crossover collisions.


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Noe Magaña

Noe Magaña is a BenitoLink reporter. He also experiments with videography and photography. A San Benito High School alumnus with a bachelor's in journalism from San Jose State and a Liberal Arts Associate's Degree from Gavilan College. Noe also attended San Jose City College and was the managing editor for the City College Times, the school's newspaper. He also was a reporter and later a copy editor for San Jose State's Spartan Daily.