I-15 (SR-15) Nbl over Ramp I-15SB to US-89SB
Davis County, Utah · rated Fair in the 2025 National Bridge Inventory
United States Bridge Conditions2025 National Bridge Inventory, FHWACompiled
- I-15 (SR-15) Nbl over Ramp I-15SB to US-89SB in Davis County, Utah, is rated in fair condition in the 2025 National Bridge Inventory (as of ).
- Its lowest-rated component is the deck, rated 5 (fair condition) on the 0-9 scale.
- It was built in 1960 and reconstructed in 2000, making it 65 years old at the 2025 inventory.
- It carries about 132,631 vehicles a day (traffic count year 2017).
- Its listed owner is the state highway agency.
- It is one of 100 of the 147 inventoried bridges in Davis County rated fair (68.0%); 1 (0.7%) 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 June 2023, on a 24-month routine inspection cycle.
- It has fracture-critical members (NBI item 92A): steel tension members without a redundant load path, which get their own scheduled inspections.
- A fair rating means the lowest-rated major component scores 5 or 6 on FHWA's 0-9 scale: some deterioration or minor section loss, but the structure is sound. It is the middle class, not a warning.
View this bridge on a map → (40.90013, -111.89248)
Component ratings
| Component | Rating (2024) | Rating (2025) | FHWA scale meaning |
|---|---|---|---|
| Deck | 5 | 5 | Fair condition |
| Superstructure | 5 | 5 | Fair condition |
| Substructure | 5 | 5 | Fair condition |
Bridge details
| Structure | Continuous steel stringer or multi-beam girder |
| Length | about 231 ft |
| Location | 500 W. .intchg. Bountiful |
| NBI structure number | 1C 302 |
| Condition class | Fair |
| Traffic status (item 41) | Open, no restriction |
| Last inspection (item 90) | June 2023 |
| Inspection interval (item 91) | 24 months |
| Scour (item 113) | N: not over a waterway |
| Fracture critical (item 92A) | Yes |
Source: FHWA National Bridge Inventory, 2025 data as reported by the Utah department of transportation.
Busiest bridges in Davis County
| Bridge | Built | Vehicles/day | Condition |
|---|---|---|---|
| I-15 (SR-15) over 1100 West St. (main St.) | 1997 | 164,022 | Fair |
| I-15 (SR-15) over Center St. (cudahy Ln.) | 1997 | 164,022 | Good |
| I-15 (SR-15) Nbl over SR-93 2600 SOUTH in NSL | 2015 | 164,022 | Good |
| I-15 (SR-15) Sbl over SR-93 2600 SOUTH in NSL | 2015 | 164,022 | Good |
| I-15 (SR-15) Nbl over SR-68 500 South Street | 2015 | 157,594 | Good |
| I-15 (SR-15) Sbl over 500 South Street | 2015 | 157,594 | Good |
All bridges nearby: Davis County, UT bridge conditions · every bridge in Davis County · Utah bridges.
Background: how bridge ratings work · what "poor" and "structurally deficient" actually mean · how often bridges are inspected.