Lake Lefferts Bridge Closed for Repairs

The bridge over Lake Lefferts is one of those roads people barely think about until it disappears. Then suddenly Route 516 is not a straight shot anymore, school runs get longer, and local traffic starts spilling onto side streets. That is what happened here. Middlesex County shut the Old Bridge-Matawan Road bridge after inspectors found a structural problem, and the crossing between Old Bridge, Matawan, and Aberdeen is now closed while emergency repairs happen. (patch.com) ### What exactly closed? The closure is the CR 516 bridge over Lake Lefferts — the span between Lakeridge Drive in Old Bridge and Miriam Drive in Matawan. Old Bridge Township said the work is under Middlesex County’s direction, and police in Matawan and Aberdeen told drivers the bridge is closed to through traffic for emergency repairs. (patch.com)? The short version is structural trouble. Local police said “some structural problem” was found on the bridge, which was enough to force an immediate shutdown instead of a keep-it-open-and-monitor-it approach. That usually means officials decided the risk of leaving traffic on the bridge was worse than the disruption of closing it. That last part is an inference, but it fits the fact pattern — emergency repair, full closure, county-led work. (patch.com) ### How long is it supposed to last? Right now, the working timeline runs to about May 25, 2026. Earlier township guidance in mid-April pointed to a much shorter closure window, roughly through May 1. Then the situation escalated into an emergency repair project and the end date moved out toward Memorial Day, with the usual caveat that weather can push construction schedules around. (oldbridge.com) ### Why is this bridge so fragile? Because this is not a new structure with a surprise problem. The bridge was originally built in 1929, and local planning documents have been flagging deterioration for years — broken sections of steel grid deck, deteriorated concrete, and broader structural and operational deficiencies. Aberdeen’s 2022 resolution backing a replacement plan also noted repairs in 2019 that were made to address critical defects just to keep the bridge operating safely. (aberdeennj.org) ### Wasn’t it already headed for replacement? Yes — and that is the bigger story underneath the closure. Middlesex County, working with Monmouth County, has been planning a full replacement or major rehabilitation of Bridge 3B40 over Lake Lefferts. The preferred concept that local officials backed is not just a fix-up. It is a replacement with a wider, safer layout that adds shoulders and a shared-use path for pedestrians and cyclists. (cr516bridgeoverlakelefferts.com) ### So why do emergency repairs now? Basically, long-term replacement projects move slowly, but old bridges keep aging in real time. Funding for the broader Lake Lefferts infrastructure work has been lined up in pieces, including $10.5 million announced in early 2025 for reconstruction of a nearby Lake Lefferts bridge and dam project in Matawan. But design, approvals, and staging take time. Emergency repair(cr516bridgeoverlakelefferts.com) plan. (patch.com) ### What does this mean for drivers? Expect detours and slower local travel for the rest of May at minimum. Officials have told drivers to follow posted detour signs and use alternate routes, and that matters because this crossing is a daily connector between Middlesex and Monmouth county communities. When a bridge like this closes, traffic does not vanish — it redistributes, usually badly at first. (oldbridge.com) ### Bottom line? This is not a random pothole-level closure. It is a visible sign that an old, already troubled regional bridge hit the point where planners could not wait. The immediate question is when Route 516 reopens. The bigger one is how fast the long-promised replacement moves from planning into actual construction. (patch.com)