SR-150 over Thorn Creek Diversion
Summit County, Utah · rated Good in the 2025 National Bridge Inventory
United States Bridge Conditions2025 National Bridge Inventory, FHWACompiled
- SR-150 over Thorn Creek Diversion in Summit County, Utah, is rated in good condition in the 2025 National Bridge Inventory (as of ).
- Its lowest-rated component is the culvert, rated 7 (good condition) on the 0-9 scale.
- It was built in 2004, making it 21 years old at the 2025 inventory.
- It carries about 1,490 vehicles a day (traffic count year 2014).
- Its listed owner is the state highway agency.
- It is one of 16 of the 137 inventoried bridges in Summit County rated good (11.7%); 13 (9.5%) are rated poor.
- Its traffic status in the 2025 inventory is open, no restriction (NBI item 41).
- Its condition class and component ratings are unchanged from the 2024 inventory.
- Its most recent inspection on record is dated August 2024, on a 24-month routine inspection cycle.
- A good rating means every major component - deck, superstructure, substructure, or culvert - is rated 7 or higher on FHWA's 0-9 scale: no more than minor problems.
View this bridge on a map → (40.64253, -111.27188)
Component ratings
| Component | Rating (2024) | Rating (2025) | FHWA scale meaning |
|---|---|---|---|
| Culvert | 7 | 7 | Good condition |
Bridge details
| Structure | Concrete culvert |
| Length | about 20 ft |
| Location | KAMAS MOUTH of CANYON |
| NBI structure number | 0E2525 |
| Condition class | Good |
| Traffic status (item 41) | Open, no restriction |
| Last inspection (item 90) | August 2024 |
| Inspection interval (item 91) | 24 months |
| Scour (item 113) | 8: foundations stable, scour above the top of the footing |
Source: FHWA National Bridge Inventory, 2025 data as reported by the Utah department of transportation.
Busiest bridges in Summit County
| Bridge | Built | Vehicles/day | Condition |
|---|---|---|---|
| I-80WB (SR-80) over Int.x-rd@parleys Summit | 2011 | 64,590 | Fair |
| I-80 (SR-80) Ebl over Co. Rd. Intchg. X-road | 1971 | 53,725 | Fair |
| I-80 (SR-80) Wbl over Co.rd. Intchg. X-road | 1971 | 53,725 | Fair |
| I-80 (SR-80) Ebl over Co.rd.at Mtn.meadow | 1970 | 51,705 | Fair |
| I-80 (SR-80) Wbl over Co.rd.at Mtn.meadow | 1970 | 51,705 | Fair |
| I-80EB (SR-80) over Int.x-rd@parleys Summit | 2011 | 50,380 | Fair |
All bridges nearby: Summit County, UT bridge conditions · every bridge in Summit County · Utah bridges.
Background: how bridge ratings work · what "poor" and "structurally deficient" actually mean · how often bridges are inspected.