SR-163 over Comb Wash
San Juan County, Utah · rated Fair in the 2025 National Bridge Inventory
United States Bridge Conditions2025 National Bridge Inventory, FHWACompiled
- SR-163 over Comb Wash in San Juan 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 1966, making it 59 years old at the 2025 inventory.
- It carries about 840 vehicles a day (traffic count year 2022).
- Its listed owner is the state highway agency.
- It is one of 37 of the 49 inventoried bridges in San Juan County rated fair (75.5%); 0 (0.0%) 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 2023, on a 24-month routine inspection cycle.
- 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 → (37.26732, -109.67469)
Component ratings
| Component | Rating (2024) | Rating (2025) | FHWA scale meaning |
|---|---|---|---|
| Deck | 5 | 5 | Fair condition |
| Superstructure | 6 | 6 | Satisfactory condition |
| Substructure | 5 | 5 | Fair condition |
Bridge details
| Structure | Steel stringer or multi-beam girder |
| Length | about 215 ft |
| Location | 7 Miles West of Bluff |
| NBI structure number | 0C 479 |
| Condition class | Fair |
| Traffic status (item 41) | Open, no restriction |
| Last inspection (item 90) | August 2023 |
| Inspection interval (item 91) | 24 months |
| Scour (item 113) | 5: foundations stable, scour within the limits of the footing or piles |
Source: FHWA National Bridge Inventory, 2025 data as reported by the Utah department of transportation.
Busiest bridges in San Juan County
| Bridge | Built | Vehicles/day | Condition |
|---|---|---|---|
| US-191 (SR-191) over Mormon Tank Wash | 1998 | 6,237 | Fair |
| US-191 (SR-191) over Kane Springs Wash | 1996 | 6,237 | Fair |
| US-191 (SR-191) over Big Mule Shoe Wash Tun. | 1940 | 6,237 | Good |
| US-191 (SR-191) over Coyote Wash | 2001 | 5,296 | Good |
| US-191 (SR-191) over Hatch Wash | 1956 | 4,080 | Fair |
| US-191 (SR-191) over Peters Wash | 1959 | 3,735 | Fair |
All bridges nearby: San Juan County, UT bridge conditions · every bridge in San Juan County · Utah bridges.
Background: how bridge ratings work · what "poor" and "structurally deficient" actually mean · how often bridges are inspected.