CR 56 over Bunker Hill Creek
Benton County, Minnesota · rated Poor in the 2025 National Bridge Inventory
United States Bridge Conditions2025 National Bridge Inventory, FHWACompiled
- CR 56 over Bunker Hill Creek in Benton County, Minnesota, is rated in poor condition in the 2025 National Bridge Inventory (as of ).
- Its lowest-rated component is the substructure, rated 3 (serious condition) on the 0-9 scale.
- It was built in 1971, making it 54 years old at the 2025 inventory.
- It carries about 350 vehicles a day (traffic count year 2011).
- Its listed owner is the county highway agency.
- It is one of 11 of the 118 inventoried bridges in Benton County rated poor (9.3%); 11 (9.3%) 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 October 2024, on a 12-month routine inspection cycle.
- 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 → (45.80247, -94.17593)
Component ratings
| Component | Rating (2024) | Rating (2025) | FHWA scale meaning |
|---|---|---|---|
| Deck | 5 | 5 | Fair condition |
| Superstructure | 5 | 5 | Fair condition |
| Substructure | 3 | 3 | Serious condition |
Bridge details
| Structure | Timber slab |
| Length | about 54 ft |
| Location | 0.1 Mi N of Jct CR 40 |
| NBI structure number | 92792 |
| Condition class | Poor |
| Traffic status (item 41) | Open, no restriction |
| Last inspection (item 90) | October 2024 |
| Inspection interval (item 91) | 12 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 Minnesota department of transportation.
Busiest bridges in Benton County
| Bridge | Built | Vehicles/day | Condition |
|---|---|---|---|
| Mn 23 over US 10 | 2024 | 28,884 | Good |
| Mn 23 over US 10 | 2023 | 28,884 | Good |
| Mn 15 over Benton Dr Miss Rvr RR | 1993 | 26,000 | Fair |
| Msas 115 over Miss R BNSF RR Strs | 2006 | 20,400 | Good |
| US 10 over Csah 2 | 2013 | 12,750 | Good |
| US 10 over Csah 2 | 2013 | 12,750 | Good |
All bridges nearby: Benton County, MN bridge conditions · every bridge in Benton County · Minnesota bridges.
Background: how bridge ratings work · what "poor" and "structurally deficient" actually mean · how often bridges are inspected.