Rd 20 over Warm Slough
Merrick County, Nebraska · rated Good in the 2025 National Bridge Inventory
United States Bridge Conditions2025 National Bridge Inventory, FHWACompiled
- Rd 20 over Warm Slough in Merrick County, Nebraska, 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 1968, making it 57 years old at the 2025 inventory.
- It carries about 25 vehicles a day (traffic count year 2003).
- Its listed owner is the county highway agency.
- It is one of 113 of the 173 inventoried bridges in Merrick County rated good (65.3%); 15 (8.7%) are rated poor.
- 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 → (41.1444, -97.9199)
Component ratings
| Component | Rating (2025) | FHWA scale meaning |
|---|---|---|
| Deck | 7 | Good condition |
| Superstructure | 7 | Good condition |
| Substructure | 7 | Good condition |
Bridge details
| Structure | Timber stringer or multi-beam girder |
| Length | about 40 ft |
| Location | 3.7E 1.4N Central City |
| NBI structure number | C006103905P |
| Condition class | Good |
Source: FHWA National Bridge Inventory, 2025 data as reported by the Nebraska department of transportation.
Busiest bridges in Merrick County
| Bridge | Built | Vehicles/day | Condition |
|---|---|---|---|
| US34/N2 over M Ch Platte River | 1969 | 7,890 | Good |
| US30 over Warm Slough Overflow | 1991 | 6,345 | Good |
| US30 over Warm Slough | 1931 | 4,250 | Good |
| US30 over Stream | 1973 | 3,870 | Good |
| US30 over Silver Creek | 2020 | 3,685 | Good |
| N14 over Platte River | 1991 | 3,200 | Good |
All bridges nearby: Merrick County, NE bridge conditions · every bridge in Merrick County · Nebraska bridges.
Background: how bridge ratings work · what "poor" and "structurally deficient" actually mean · how often bridges are inspected.