I-15NB (SR-15) over Co.Rd. W of MANDERFIELD
Beaver County, Utah · rated Good in the 2025 National Bridge Inventory
United States Bridge Conditions2025 National Bridge Inventory, FHWACompiled
- I-15NB (SR-15) over Co.Rd. W of MANDERFIELD in Beaver County, Utah, is rated in good condition in the 2025 National Bridge Inventory (as of ).
- Its lowest-rated component is the substructure, rated 7 (good condition) on the 0-9 scale.
- It was built in 2013, making it 12 years old at the 2025 inventory.
- It carries about 24,161 vehicles a day (traffic count year 2022).
- Its listed owner is the state highway agency.
- It is one of 8 of the 53 inventoried bridges in Beaver County rated good (15.1%); 2 (3.8%) 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 February 2023, 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 → (38.35931, -112.66119)
Component ratings
| Component | Rating (2024) | Rating (2025) | FHWA scale meaning |
|---|---|---|---|
| Deck | 8 | 8 | Very good condition |
| Superstructure | 8 | 8 | Very good condition |
| Substructure | 7 | 7 | Good condition |
Bridge details
| Structure | Prestressed concrete stringer or multi-beam girder |
| Length | about 78 ft |
| Location | 4.6 mi. N. of Beaver |
| NBI structure number | 1F 853 |
| Condition class | Good |
| Traffic status (item 41) | Open, no restriction |
| Last inspection (item 90) | February 2023 |
| 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 Beaver County
| Bridge | Built | Vehicles/day | Condition |
|---|---|---|---|
| I-15 (SR-15) Nbl over Deer Crossing | 1975 | 25,503 | Fair |
| I-15 (SR-15) Nbl over County Access Road | 1975 | 25,503 | Fair |
| I-15 (SR-15) Sbl over Deer Crossing | 1984 | 25,503 | Fair |
| I-15 (SR-15) Sbl over County Access Road | 1975 | 25,503 | Fair |
| I-15 (SR-15)NBRamp over North Wash | 1964 | 24,161 | Fair |
| I-15 (SR-15) Nbl over SR-160 | 1970 | 24,161 | Fair |
All bridges nearby: Beaver County, UT bridge conditions · every bridge in Beaver County · Utah bridges.
Background: how bridge ratings work · what "poor" and "structurally deficient" actually mean · how often bridges are inspected.