State Route 12; Henrieville Area Bridge Work

Project Overview

Starting the week on November 20, 2023 The Utah Department of Transportation will be removing and replacing the Henrieville Bridge and the Smith Ranch Bridge on State Route 12 in the Henrieville, Utah area. The improvements will take about a year to compete with a Winter Shutdown planned from January 20, 2024 to March 19, 2024

Henrieville Bridge: A bypass road will be built to divert traffic around the current bridge while crews rebuild. The team will begin creating the bypass road in November 2024. The bypass road will be paved and opened in March 2024. The bridge will be operational until August 2024. 

Smith Ranch Bridge: This bridge will be constructed one side at a time. Traffic will be managed by a Traffic Light and northbound and southbound traffic will alternate moving across the bridge. Motorists can expect up to a 15 minute delay while waiting to cross the bridge. Construction on this bridge started March 4, 2024 along with use of the Traffic Signal to manage one lane traffic.

Project Schedule

November 20, 2023 - January 19, 2024: Phase 1 construction of bypass road around Henrieville Bridge.

January 20 - March 19, 2024: WINTER SHUTDOWN - Traffic on SR-12 will flow in a normal pattern. 

March 19 - July 2024: Phase 1 demolition of the southbound side of the Smith Ranch Bridge and reconstruction.

March 19 - August 2024: Lay roadbase and asphalt paving on the bypass road on the Henrieville Bridge; Lower speed limit to 25 mph; Switch traffic onto new bypass road; remove existing structure; build new bridge. 

July 2024 - October 2024: Switch traffic; Phase 2 demolition of northbound side of the Smith Ranch Bridge and reconstruction.  

September - November 2024: Install signage; Reclamation seeding in specified areas; Place two-coats of Pavement Marking Paint and other road signage. 

November 2024 - Substantial Completion of two new bridges! 


Crews will be working Monday through Friday, 7:00 a.m. to 7:00 p.m., approximately. Limited nightwork will take place on the project when girders for the new bridges are placed and the bridge decks are poured. 


The schedule is subject to weather, unforeseen circumstances, supply chain interruptions and other impacts. 


Contact the Public Information Team by email or call the Hotline: 435-531-1358.



The photo shows the one-way traffic control over the Smith Fork Bridge. 

Below is the one lane bypass road around the Henrieville Bridge on SR-12 just west of Henrieville. Motorists can expect up to a 15 minute delay through this area. 


Project Schedule

The project will take from November 2023 to November 2024 to complete barring any unforeseen circumstances. 

Construction: Working Hours

Work Hours: 7 a.m. - 5 p.m.

Workdays: Monday - Friday

Schedules are subject to change due to weather conditions and material availability.



Contact Information

To contact the public information team with questions or concerns:

Hotline: 435-531-1358


Stay Informed

Visit the UDOT Project Page at