U.S. 21 Bridge to Shift Traffic Pattern in Columbia

Southbound lanes move to a new bridge on November 2, affecting commuters traveling over Congaree Creek.

Updated on Oct. 30, 2026 in Car Types

Modern concrete bridge over a tree-lined creek with a line of traffic cones marking a new driving path. — The South Carolina Department of Transportation will shift southbound traffic onto a newly completed bridge on U.S. Route 21 over Congaree Creek on November 2. AI Illustration. Upload story photo >

Live Poll

Do you expect the new traffic pattern on U.S. Route 21 to improve your daily commute?

Starting November 2, 2026, the South Carolina Department of Transportation will shift southbound traffic onto a newly completed bridge on U.S. Route 21 over Congaree Creek. Northbound lanes will continue to use their current configuration throughout the project.

Why it matters

This shift is part of an ongoing infrastructure upgrade for the U.S. 21 crossing in the Columbia area. While it introduces a change to local commute patterns for area drivers, the transition serves as a milestone toward full project completion.

The project involves the U.S. Route 21 bridge over Congaree Creek, where traffic patterns shift on November 2, 2026. Two northbound lanes will remain unchanged, while southbound traffic moves to the new structure.

The players

South Carolina Department of Transportation

The state agency responsible for the maintenance and development of South Carolina's public highway and bridge infrastructure.

The details

The South Carolina Department of Transportation is rerouting southbound motorists onto a newly constructed bridge as the next phase of the project begins. Northbound lanes will operate as they currently do, maintaining their existing traffic flow during this transition. This phased approach allows crews to continue work on the site while keeping transit moving across Congaree Creek.

November 2, 2026: New traffic pattern implementation begins on the U.S. 21 bridge.
Late 2027: Expected completion for the entire bridge construction project.

The Home Front

This traffic shift follows the established construction schedule set by the South Carolina Department of Transportation's bridge improvement plans. It marks a significant milestone in the regional effort to modernize aging infrastructure to meet local capacity needs.

Columbia commuters who use U.S. 21 should plan for potential minor delays and adjust to the new traffic flow pattern beginning November 2. Observe all posted construction signage and speed limits near the Congaree Creek bridge to ensure safety during the shift.

The takeaway

This bridge shift is a temporary change for commuters while crews finalize long-term infrastructure improvements. Residents should build extra time into their morning commutes starting November 2 and watch for future updates as the project nears its 2027 completion date.