BLM Road 4116 over Big Sandy River
Sublette County, Wyoming · rated Poor in the 2025 National Bridge Inventory
United States Bridge Conditions2025 National Bridge Inventory, FHWACompiled
- BLM Road 4116 over Big Sandy River in Sublette County, Wyoming, is rated in poor condition in the 2025 National Bridge Inventory (as of ).
- Its lowest-rated component is the superstructure, rated 1 (imminent failure condition) on the 0-9 scale.
- It was built in 1982, making it 43 years old at the 2025 inventory.
- It carries about 60 vehicles a day (traffic count year 2024).
- It is one of 11 of the 110 inventoried bridges in Sublette County rated poor (10.0%); 11 (10.0%) are rated poor.
- Its traffic status in the 2025 inventory is closed to all traffic (NBI item 41).
- Its class is unchanged from 2024 (poor), but component ratings moved: superstructure 3 to 1.
- Status change: newly closed since 2024.
- Its most recent inspection on record is dated July 2024, on a 12-month routine inspection cycle.
- It is coded scour critical (NBI item 113 = 3): scour critical: foundations unstable for the assessed or calculated scour.
- A poor rating means at least one major component - deck, superstructure, or substructure - is rated 4 or lower on FHWA's 0-9 scale. It does not by itself mean the bridge is unsafe; bridges judged unsafe are closed or load-restricted by their owners.
View this bridge on a map → (42.57265, -109.29162)
Component ratings
| Component | Rating (2024) | Rating (2025) | FHWA scale meaning |
|---|---|---|---|
| Deck | 3 | 3 | Serious condition |
| Superstructure | 3 | 1 | Imminent failure condition |
| Substructure | 5 | 5 | Fair condition |
Bridge details
| Structure | Steel |
| Length | about 65 ft |
| Location | 35 Miles Se Of Boulder |
| NBI structure number | MXB |
| Condition class | Poor |
| Traffic status (item 41) | Closed to all traffic |
| Last inspection (item 90) | July 2024 |
| Inspection interval (item 91) | 12 months |
| Scour (item 113) | 3: scour critical: foundations unstable for the assessed or calculated scour |
Source: FHWA National Bridge Inventory, 2025 data as reported by the Wyoming department of transportation.
Busiest bridges in Sublette County
| Bridge | Built | Vehicles/day | Condition |
|---|---|---|---|
| US 191 over Pine Creek | 1962 | 10,413 | Fair |
| US 191 over Barber Creek | 1993 | 5,376 | Fair |
| US 189 over North Piney Creek | 1960 | 5,233 | Fair |
| US 191 over Duck Creek | 1993 | 4,637 | Fair |
| US 191 over New Fork River | 1993 | 4,637 | Fair |
| US 191 over Wildlife Crossing | 2011 | 4,637 | Good |
All bridges nearby: Sublette County, WY bridge conditions · every bridge in Sublette County · Wyoming bridges.
Background: how bridge ratings work · what "poor" and "structurally deficient" actually mean · how often bridges are inspected.