R37B Fas 1687 over Tri-county Supply Canal
Gosper County, Nebraska · rated Fair in the 2025 National Bridge Inventory
United States Bridge Conditions2025 National Bridge Inventory, FHWACompiled
- R37B Fas 1687 over Tri-county Supply Canal in Gosper County, Nebraska, is rated in fair condition in the 2025 National Bridge Inventory (as of ).
- Its lowest-rated component is the deck, rated 6 (satisfactory condition) on the 0-9 scale.
- It was built in 1959 and reconstructed in 2016, making it 66 years old at the 2025 inventory.
- It carries about 765 vehicles a day (traffic count year 2011).
- It is one of 16 of the 62 inventoried bridges in Gosper County rated fair (25.8%); 11 (17.7%) are rated poor.
- Its traffic status in the 2025 inventory is posted for load (NBI item 41).
- Its class is unchanged from 2024 (fair), but component ratings moved: deck 7 to 6.
- Its most recent inspection on record is dated October 2024, 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 → (40.6915, -99.8303)
Component ratings
| Component | Rating (2024) | Rating (2025) | FHWA scale meaning |
|---|---|---|---|
| Deck | 7 | 6 | Satisfactory condition |
| Superstructure | 7 | 7 | Good condition |
| Substructure | 6 | 6 | Satisfactory condition |
Bridge details
| Structure | Steel stringer or multi-beam girder |
| Length | about 225 ft |
| Location | 1.5E 6N of Elwood |
| NBI structure number | C003702905P |
| Condition class | Fair |
| Traffic status (item 41) | Posted for load |
| Last inspection (item 90) | October 2024 |
| Inspection interval (item 91) | 24 months |
| Scour (item 113) | 4: foundations stable, field review says exposed foundations need protection |
Source: FHWA National Bridge Inventory, 2025 data as reported by the Nebraska department of transportation.
Busiest bridges in Gosper County
| Bridge | Built | Vehicles/day | Condition |
|---|---|---|---|
| US283 over Tri-county Supply Canal | 1992 | 2,310 | Good |
| US283 over Plum Creek | 1957 | 1,910 | Good |
| US283 over Elk Creek | 1960 | 1,225 | Good |
| Johnson Lake Dr over Tri-county Supply Canal | 1935 | 1,220 | Poor |
| N23 over Plum Creek | 1959 | 990 | Good |
| Fas 1695 over Tri-county Supply Canal | 1993 | 485 | Good |
All bridges nearby: Gosper County, NE bridge conditions · every bridge in Gosper County · Nebraska bridges.
Background: how bridge ratings work · what "poor" and "structurally deficient" actually mean · how often bridges are inspected.