Bridge conditions in Salt Lake County, Utah
666 inventoried bridges · 29 rated poor · 2025 National Bridge Inventory
United States Bridge Conditions2025 National Bridge Inventory, FHWACompiled
Salt Lake County tracks close to typical: 29 of its 666 inventoried bridges (4.4%) are rated poor, against a national rate of about 7%.
- 29 of the 666 bridges in Salt Lake County, Utah, are rated in poor condition (4.4%) in the 2025 National Bridge Inventory, as of .
- 147 bridges (22.1%) are rated good and 490 (73.6%) fair.
- The median Salt Lake County bridge was built in 1999.
- The busiest poor-rated bridge is I-80 (SR-80) over SR-89 (US-89) State St. (built 1966), carrying about 127,090 vehicles a day.
Good 22.1% · Fair 73.6% · Poor 4.4% of 666 bridges
Bridges rated poor
Every bridge in the county with a poor rating, busiest first. Poor means a major component is rated 4 or lower on FHWA's 0-9 scale; it is a repair flag, not a closure notice.
Busiest bridges in the county
| Bridge | Built | Vehicles/day | Condition |
|---|---|---|---|
| I-15 (SR-15) Nbl over Andy AVE.(2250 S.)& | 2000 | 268,370 | Fair |
| I-15 NB Col-dist over Rt.pond .& Uta Tracks | 1999 | 268,370 | Good |
| I-15NB Col-dist.rp over Drainage Water Ret. Pond | 2000 | 268,370 | Good |
| I-15 (SR-15) Nbl over 2100 South Street | 2000 | 268,370 | Fair |
| I-15 NB Col-dist. over 2100 South Street | 1999 | 268,370 | Fair |
| I-15 (SR-15) Sbl over Andy AVE.(2250 S.)& | 1999 | 268,370 | Fair |
| RAMP to I-80 EB over Andy AVE.(2250 S.)& | 1999 | 268,370 | Fair |
| I-15 (SR-15) Sbl over 2100 South Street | 1999 | 268,370 | Fair |
| I-15 SB Col-dist. over 2100 South Street | 1999 | 268,370 | Fair |
| I15SBCD.Rp. toI80 over 2250 South St. & Upr | 1999 | 268,370 | Fair |
Source: FHWA National Bridge Inventory, 2025. Counts cover inventoried highway bridges over 20 feet; ratings are reported by the state DOT.
All of Utah: Utah bridge conditions by county · every download on the data page.
Background: how bridge ratings work · what "poor" and "structurally deficient" actually mean · how often bridges are inspected.