Utah has 3,144 bridges on public roads, according to the FHWA National Bridge Inventory. Of those, 109 are rated in poor condition — a rate of 3.5% — below the national average of 6.7%. Another 2,376 are in fair condition, while 659 are in good condition.
Use the interactive Utah bridge map below to explore every bridge, color-coded by condition. Click any cluster to zoom in, then click an individual bridge for its route, structural ratings, year built, daily traffic, and last inspection date. Filter by condition using the checkboxes, or switch to satellite view to see bridges from above. For a national comparison, see the full US bridges interactive map.
Utah Bridge Conditions by the Numbers
- 3,144 total bridges on public roads in Utah
- 109 in poor condition (3.5%) — below the national average of 6.7%
- 2,376 in fair condition (75.6%)
- 659 in good condition (21%)
- Oldest bridge in the inventory: COUNTY ROAD, built 1905
Oldest Bridges in Utah
The oldest bridges in Utah date back to the 1900s. The ten oldest Utah bridges still in the national inventory:
| Route / Facility | Crosses | Year Built | Condition |
|---|---|---|---|
| COUNTY ROAD | SPRING CANYON WASH | 1905 | Fair |
| US-89(SR-89)-MAIN | HOBBLE CREEK | 1913 | Fair |
| COUNTY ROAD | PRICE RIVER | 1914 | Poor |
| COUNTY ROAD | BEAR RIVER | 1914 | Fair |
| COUNTY ROAD | WEST CANAL | 1915 | Fair |
| COUNTY ROAD | COAL WASH | 1915 | Fair |
| GRAMERCY AVENUE | OGDEN RIVER | 1915 | Fair |
| COUNTY ROAD | BEAR RIVER | 1917 | Fair |
| US-91 (SR-91) | LOGAN RIVER | 1918 | Fair |
| COUNTY ROAD | THOMPSON WASH | 1919 | Fair |
Most Concerning Utah Bridges: Poor Condition and High Traffic
The bridges of greatest concern combine a poor structural rating with high daily traffic loads. These Utah bridges carry the most vehicles per day while rated in poor condition:
| Route / Facility | Crosses | Daily Traffic | Year Built | Deck | Superstructure | Substructure |
|---|---|---|---|---|---|---|
| I-80 (SR-80) | SR-89 (US-89) STATE ST. | 127,090 vehicles/day | 1966 | Satisfactory (6) | Satisfactory (6) | Poor (4) |
| I-215 (SR-215) WBL | SR-68 REDWOOD ROAD | 102,805 vehicles/day | 1976 | Poor (4) | Satisfactory (6) | Satisfactory (6) |
| SR-201 (2100 S.ST) | 3200 WEST ST. INT. X-RD. | 99,668 vehicles/day | 1980 | Poor (4) | Poor (4) | Fair (5) |
| I-215 (SR-215) NBL | SR-173 5400 SO. STREET | 91,400 vehicles/day | 1976 | Poor (4) | Good (7) | Satisfactory (6) |
| 10600 SO | EAST JORDAN CANAL | 37,101 vehicles/day | 1979 | Fair (5) | Poor (4) | Satisfactory (6) |
How Utah Bridge Conditions Are Assessed
Bridge condition in the NBI is determined by ratings of three structural components — deck, superstructure, and substructure — on a scale of 0 (failed) to 9 (excellent). A bridge is classified as good when all three components score 7 or above. It is classified as poor when any component scores 4 or below. Ratings of 5 or 6 on any component with no component below 5 result in a fair classification. UDOT coordinates inspections across Utah in line with FHWA standards, with most bridges inspected on a 24-month cycle.
Frequently Asked Questions
How many bridges in Utah are in poor condition?
109 of Utah’s 3,144 bridges are currently rated in poor condition by the FHWA National Bridge Inventory, a rate of 3.5%.
What is the oldest bridge in
The oldest bridge recorded in Utah’s NBI inventory is COUNTY ROAD, built in 1905.
What does a poor bridge rating mean?
A poor rating means at least one of a bridge’s three key structural components — deck, superstructure, or substructure — has been rated 4 or below on the NBI 0-9 scale. A rating of 4 is defined as “poor condition,” and ratings of 3, 2, 1, or 0 indicate increasingly serious deterioration. Poor-rated bridges are not necessarily unsafe or closed, but they require priority attention and monitoring.
View all 624,000+ US bridges on the national interactive map
Compare with neighboring states: Arizona bridges map | Colorado bridges map | Idaho bridges map | Nevada bridges map | New Mexico bridges map | Wyoming bridges map
