SH 121 / SH 183
SH 121 / SH 183 in 0.1 MI W Of Forest Ridge, Tarrant County, Texas received a condition grade of F (0/100). Built in 2014, the bridge carries 161K vehicles daily on SH 121 / SH 183 over Sulphur Branch Trib. It is classified as structurally deficient.
SH 121 / SH 183 carries an F on the BridgeSafety Condition Score with 0/100 — the bottom tier of the FHWA NBI distribution. Component ratings flag the structure for near-term rehabilitation or replacement; the bridge may remain open to traffic but is on the priority list for action.
The bridge was built in 2014 and is 12 years old — relatively young against the U.S. bridge stock. Modern bridges built to current FHWA standards generally outperform older structures on condition ratings. SH 121 / SH 183 carries an average daily traffic count of 160,780 vehicles, with 18 lane(s) crossing Sulphur Branch Trib. The owning agency is State Highway Agency; bridge inspection records flow into the federal NBI database annually.
Component Ratings
The riding surface, evaluated for cracking, spalling, and wear
Beams, girders, and trusses that support the deck
Piers, abutments, and foundations below the deck
Bridge Details
About This Bridge
SH 121 / SH 183 is a 12-year-old bridge located 0.1 MI W Of Forest Ridge in Tarrant County, Texas. The bridge carries SH 121 / SH 183 over Sulphur Branch Trib with 18 traffic lanes, handling approximately 161K vehicles per day. Built in 2014, the structure spans 7.9 meters.
The bridge received a Condition Grade of F (0/100) based on Federal Highway Administration inspection data. Its deck is rated 0/9 (serious), superstructure 0/9 (serious), and substructure 0/9 (serious). The bridge is classified as structurally deficient, meaning at least one major component is rated 4 or below, this signals a need for repair or replacement but does not necessarily indicate an immediate safety hazard.
This bridge is owned and maintained by State Highway Agency.
Location Map
Frequently Asked Questions
SH 121 / SH 183 has a Condition Score of 0/100 (Grade F). Its deck is rated 0/9, superstructure 0/9, and substructure 0/9 on the NBI scale. The bridge is classified as structurally deficient.
SH 121 / SH 183 was built in 2014, making it 12 years old. The average bridge age in the United States is 48 years.
SH 121 / SH 183 carries approximately 161K vehicles per day (average daily traffic). The bridge has 18 traffic lanes. It is 7.9 meters long and located on SH 121 / SH 183 in 0.1 MI W Of Forest Ridge, Tarrant County, Texas.
Yes, SH 121 / SH 183 is classified as structurally deficient because at least one of its primary components (deck, superstructure, or substructure) is rated 4 or below on the 0-9 NBI scale. This does not necessarily mean it is unsafe, but it requires significant repair or replacement.
SH 121 / SH 183 is located 0.1 MI W Of Forest Ridge in Tarrant County, Texas. The bridge carries SH 121 / SH 183 over Sulphur Branch Trib. Its coordinates are 32.836872, -97.143536. It is maintained by State Highway Agency.
SH 121 / SH 183 carries SH 121 / SH 183 over Sulphur Branch Trib. The bridge is 7.9 meters long and was built in 2014.
Condition Score is calculated from deck (33%), superstructure (33%), and substructure (34%) NBI ratings with an age penalty for bridges over 50 years.
Source: FHWA National Bridge Inventory, 2026.