Trafficway Bridge replacement to close bridge May 19; city posts detours and real-time updates

The Arroyo Grande City Council heard details May 13 about the Trafficway Bridge replacement, which city staff described as the largest capital project in the city's history and expected to require a full bridge closure beginning at 7 a.m. Monday, May 19.

City Manager Matt Downing said the project budget is “almost $14,000,000” and warned of major detours and village-area congestion during construction. He urged residents to consult the project page (arroyogrande.org/TWB) for detour maps, weekly progress updates and alert signups. “The Trafficway Bridge will be closed beginning at 7AM on Monday, May 19,” Downing said.

Why it matters: the bridge closure will reroute traffic through village streets and is expected to increase congestion downtown; city staff are coordinating temporary signal adjustments and detours to manage flow and minimize impacts on businesses. Downing described temporary adjustments that include maintaining two lanes on Bridge Street toward Branch Street and installing temporary traffic signals to permit legal left turns that are normally restricted.

Traffic management and mitigation: staff installed a temporary traffic circle near the high school to reduce illegal U-turns and lefts and improve the flow of westbound vehicles. Downing said the temporary circle is bolted into the roadway and cost about $75,000 for the circle element plus roughly $180,000 for paving and striping; the paving work was being done regardless of the circle.

Public information: the city plans to update the project page weekly with “what we did last week, what we're doing this week, and what we're doing next week,” and asked residents to sign up for alerts and view detour maps before the closure.

Ending: Staff said they will continue community outreach, post real-time updates, and coordinate with the Chamber of Commerce on a “buy local” campaign to support village businesses during construction.