I-15 NB (SR-15) over SR-175 11400 So. St.
Salt Lake County, Utah · rated Good in the 2025 National Bridge Inventory
United States Bridge Conditions2025 National Bridge Inventory, FHWACompiled
- I-15 NB (SR-15) over SR-175 11400 So. St. in Salt Lake County, Utah, is rated in good condition in the 2025 National Bridge Inventory (as of ).
- Its lowest-rated component is the deck, rated 7 (good condition) on the 0-9 scale.
- It was built in 2010, making it 15 years old at the 2025 inventory.
- It carries about 159,640 vehicles a day (traffic count year 2014).
- Its listed owner is the state highway agency.
- It is one of 147 of the 666 inventoried bridges in Salt Lake County rated good (22.1%); 29 (4.4%) 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 November 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 → (40.54395, -111.89438)
Component ratings
| Component | Rating (2024) | Rating (2025) | FHWA scale meaning |
|---|---|---|---|
| Deck | 7 | 7 | Good condition |
| Superstructure | 7 | 7 | Good condition |
| Substructure | 7 | 7 | Good condition |
Bridge details
| Structure | Prestressed concrete stringer or multi-beam girder |
| Length | about 214 ft |
| Location | At the 114th South Intchg |
| NBI structure number | 1F 784 |
| Condition class | Good |
| Traffic status (item 41) | Open, no restriction |
| Last inspection (item 90) | November 2024 |
| Inspection interval (item 91) | 24 months |
| Scour (item 113) | N: not over a waterway |
Source: FHWA National Bridge Inventory, 2025 data as reported by the Utah department of transportation.
Busiest bridges in Salt Lake 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 |
All bridges nearby: Salt Lake County, UT bridge conditions · every bridge in Salt Lake County · Utah bridges.
Background: how bridge ratings work · what "poor" and "structurally deficient" actually mean · how often bridges are inspected.