The Iron Horse Regional Trail bridge over Treat Boulevard, east of the Jones Road intersection by Pleasant Hill BART, has been closed since October 5. Contra Costa County expects it to stay closed through Thursday, December 31, 2026, unless something unexpected comes up. Until then, walkers, runners and cyclists cross Treat at street level with the cars.
The bridge is named for Robert I. Schroder, a county supervisor known as "Mr. Transportation." He pushed to turn the old Southern Pacific line into a path for walkers and cyclists, at a time when some people wanted it for other traffic. For the rest of 2026, the trail he helped protect shares this crossing with Treat Boulevard traffic again.
What the Crews Are Doing After Dark
The repairs happen overnight. Contra Costa County Public Works scheduled crews from 9 p.m. to 5 a.m., Sunday through Thursday, weather permitting and not on holidays. The bridge stays closed around the clock anyway, including daytime and weekends when nobody is working. The scope, as the County's project announcement lists it, has four parts:
- Replacing the bearing pads
- Paint repairs
- A treatment on the bridge deck
- New sidewalk and curb on the bridge
This is maintenance on a bridge that's already there, so nothing is being rebuilt or widened. The bearing pads are the part that affects drivers, as the next section explains.
The Crossing the Bridge Normally Lets You Skip
According to the County, trail users are sent to the existing street crossing on Treat Boulevard, with detour signs posted around the work zone. A 2020 County study of the Iron Horse corridor lists Treat Boulevard as one of the trail's grade-separated crossings. Normally the trail passes over the street here. This fall it crosses at street level.
How the closure affects you depends on how you use Treat:
| If you are... | What changes | For how long |
|---|---|---|
| Walking, running or riding the Iron Horse | Street-level crossing at Treat instead of the bridge | Through Dec. 31, 2026 |
| Driving Treat during work hours | Delays of about 10 minutes, occasional lane closures | 9 p.m. to 5 a.m., Sunday through Thursday |
| Driving Treat on a full-closure night | Detour of about 5 miles | About four nights, dates posted on the County project page |
The full road closures are for the bearing-pad replacement. The County announced that dates would go on the Robert I. Schroder Pedestrian Bridge project page instead of in the original notice. If you drive Treat late at night, check that page.
The East Bay Regional Park District's Iron Horse page still listed the same October 5 to December 31 window in its October 20 update.
Why a Footbridge Carries a Supervisor's Nickname
Bob Schroder was born in San Francisco in 1928 and moved to Walnut Creek when he was 2, according to the Martinez News-Gazette's 2019 obituary. The paper reported that he served 16 years on the Walnut Creek City Council starting in 1960 and was mayor three times. He then represented District 3 on the Contra Costa County Board of Supervisors from 1976 to 1992. During those years, Danville grew, San Ramon incorporated and Bishop Ranch was developed.
He earned the nickname through transit. The Gazette reported that he sat on the Metropolitan Transportation Commission and was the founding chair of the Central Contra Costa Transit Authority, the agency that became County Connection. He stayed on its board until 1996. When he joined the MTC, local public transit meant a Greyhound bus and a private commuter service. His son, then mayor of Martinez, told the Gazette that his father urged area cities to pool their transportation money:
"Why not band together and form a district, and we'll get a lot more out of it."
The Gazette called the Treat Boulevard crossing a BART suspension bridge for hikers and bikers. It carries both his name and the nickname "Mr. Transportation." The Walnut Creek Historical Society's Spring 2019 newsletter also notes the dedication.
A Rail Line That Could Have Carried Trains Again
The County's corridor study says the Iron Horse follows a Southern Pacific right-of-way established in 1891 and abandoned in 1978. The Gazette wrote that trains on the line once picked up walnuts from the county's groves. After the railroad left, some people proposed using the corridor for light rail, and neighbors didn't like the idea. The land was meant for transportation, so Schroder worked to give it to pedestrians and cyclists instead of other traffic.
That decision gave the county the trail it has now. The East Bay Regional Park District describes the Iron Horse as a 32-mile trail running from Concord through Pleasant Hill and Walnut Creek toward Pleasanton. The County's 2020 study counted more than 340,000 residents and 151,000 commuters within 1.5 miles of the corridor. Those numbers show how many people live and work near the trail, not how many use it. Still, they help explain why one closed bridge by Pleasant Hill BART gets noticed.
What the Repair Costs, Measured Against the Estimate
The County's online planroom put the engineer's estimate at $805,000 for the base bid, plus two optional add-ons estimated at $195,000 and $185,000. A bid-results listing on Bid the Bay shows the contract going to Dynamo Construction for $626,572. That is about $178,000 below the base estimate, if the listing is right.
The County says the work is paid for with Measure X funds and Park Dedication funds. Those are both county funding sources, so this project is the county maintaining its own trail bridge.
Planning a Walk or Ride Until the New Year
As of the last week of October, about nine weeks remain in the scheduled closure. A few things will help until the bridge reopens:
- Check the full-closure nights before driving Treat late. The County's project page is where the roughly four overnight closures will be posted.
- If you take the Canal Trail instead, check its alerts too. The East Bay Regional Park District says the Contra Costa Canal Trail connects Martinez, Pleasant Hill, Walnut Creek and Concord and meets the Iron Horse. The district also says Contra Costa Water District maintenance continues along it throughout 2026, with brief closures possible. Its notice was updated October 20.
- The usual stops by the crossing are still open. The Contra Costa Centre eateries directory lists Hops & Scotch and Parada at 7001 Sunne Lane and Starbucks at 7000 Sunne Lane, all with entrances on Treat Boulevard. It also lists Oak Road Cafe at 2999 Oak Road, open weekdays 7 a.m. to 3 p.m. The directory doesn't show when it was last updated, so call ahead before you plan a stop around one of them.
- Expect the bridge back after December 31, if the schedule holds. The County's announcement uses the standard "barring unforeseen circumstances" wording, and work is weather-dependent.
Our family has watched this part of Contra Costa grow up along the Iron Horse for decades, and we pay attention to the projects that change how people get around their own neighborhood. If you're curious how Pleasant Hill homes near the trail and BART are valuing these days, Jake Kemper and the Lupe Kemper Team are happy to talk it through. Request a Free Home Valuation and we'll give you a clear, local read.
