I-15 SR-97 over Three Gates Trail
Weber County, Utah · rated Good in the 2025 National Bridge Inventory
United States Bridge Conditions2025 National Bridge Inventory, FHWACompiled
- I-15 SR-97 over Three Gates Trail in Weber 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 2024, making it 1 years old at the 2025 inventory.
- It carries about 140,000 vehicles a day (traffic count year 2023).
- Its listed owner is the state highway agency.
- It is one of 21 of the 129 inventoried bridges in Weber County rated good (16.3%); 9 (7.0%) are rated poor.
- Its traffic status in the 2025 inventory is open, no restriction (NBI item 41).
- It does not appear under this structure number in the 2024 inventory (a new or renumbered structure).
- Its most recent inspection on record is dated May 2024, on a 13-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 → (41.1575, -112.024)
Component ratings
| Component | Rating (2025) | FHWA scale meaning |
|---|---|---|
| Deck | 7 | Good condition |
| Superstructure | 7 | Good condition |
| Substructure | 7 | Good condition |
Bridge details
| Structure | Concrete slab |
| Length | about 32 ft |
| Location | Southeast of Roy |
| NBI structure number | 0E2806 |
| Condition class | Good |
| Traffic status (item 41) | Open, no restriction |
| Last inspection (item 90) | May 2024 |
| Inspection interval (item 91) | 13 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 Weber County
| Bridge | Built | Vehicles/day | Condition |
|---|---|---|---|
| I-15 (SR-15) Nbl over Union Pacific Railroad | 1966 | 138,457 | Fair |
| I-15 (SR-15) Sbl over SR-97 5600 So. Roy | 1966 | 138,457 | Fair |
| I-15 (SR-15) Sbl over UPRR Hill Afb Branch | 1966 | 138,457 | Fair |
| I-15NB (SR-15) over UPRR and UTA TRACKS | 2008 | 120,588 | Fair |
| I-15 SB (SR-15) over UPRR & Uta | 2009 | 120,588 | Good |
| I-15 NB over 200 S | 2022 | 115,250 | Good |
All bridges nearby: Weber County, UT bridge conditions · every bridge in Weber County · Utah bridges.
Background: how bridge ratings work · what "poor" and "structurally deficient" actually mean · how often bridges are inspected.