County Road 18 over Silver Creek
Merrick County, Nebraska · rated Poor in the 2025 National Bridge Inventory
United States Bridge Conditions2025 National Bridge Inventory, FHWACompiled
- County Road 18 over Silver Creek in Merrick County, Nebraska, is rated in poor condition in the 2025 National Bridge Inventory (as of ).
- Its lowest-rated component is the substructure, rated 4 (poor condition) on the 0-9 scale.
- It was built in 1971, making it 54 years old at the 2025 inventory.
- It carries about 30 vehicles a day (traffic count year 2003).
- Its listed owner is the county highway agency.
- It is one of 15 of the 173 inventoried bridges in Merrick County rated poor (8.7%); 15 (8.7%) are rated poor.
- Its traffic status in the 2025 inventory is posted for load (NBI item 41).
- Its condition class and component ratings are unchanged from the 2024 inventory.
- Its most recent inspection on record is dated December 2024, on a 24-month routine inspection cycle.
- It is coded scour critical (NBI item 113 = 2): scour critical: extensive scour observed, foundations unstable.
- 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 → (41.193, -97.9635)
Component ratings
| Component | Rating (2024) | Rating (2025) | FHWA scale meaning |
|---|---|---|---|
| Deck | 7 | 7 | Good condition |
| Superstructure | 6 | 6 | Satisfactory condition |
| Substructure | 4 | 4 | Poor condition |
Bridge details
| Structure | Timber stringer or multi-beam girder |
| Length | about 33 ft |
| Location | 1.5S 6W of Clarks |
| NBI structure number | C006103507 |
| Condition class | Poor |
| Traffic status (item 41) | Posted for load |
| Last inspection (item 90) | December 2024 |
| Inspection interval (item 91) | 24 months |
| Scour (item 113) | 2: scour critical: extensive scour observed, foundations unstable |
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.