The Illinois Department of Transportation announced on Apr. 3 that the restoration of Princeton’s Red Covered Bridge has moved into Phase II, bringing the historic structure closer to reopening after being closed due to damage in 2023.
The bridge, which is more than a century old, was hit by an oversized truck last year and has since been closed for safety reasons. The new phase involves preparing detailed construction plans and specifications following the completion of preliminary engineering work. IDOT said that a second review of these plans is expected during the summer, with Phase II anticipated to finish later in 2026.
Located on Bureau County Road 1950 E near Illinois 26, the Red Covered Bridge remains reinforced with bracing while repairs are planned. Once design and planning are completed, IDOT will put the project out for bid to select a contractor. Construction is expected to take several months once it begins.
Approximately $1 million has been allocated in IDOT’s current multiyear program for repairs and upgrades. Planned work includes replacing the roof and cross bracing rods, floor beams, siding, lighting systems, wiring, fire suppression piping, security cameras, as well as applying fire-resistant coatings inside and painting outside surfaces. Upgrades also include installing a vehicle height detection system with flashing lights and new high-visibility signage warning drivers about height restrictions.
Built in 1863 over Big Bureau Creek, the bridge has survived arson attempts, erosion threats, high winds and repeated strikes from large vehicles over its history. It is listed on the National Register of Historic Places and protected under Section 106 of the National Historic Preservation Act of 1966. Before its closure in 2023 it was notable as Illinois’ only state-owned covered bridge still open to traffic—serving about 275 vehicles daily—and remains a local landmark attracting tourists from around the world.
