County Highway 9 over Antelope Creek
Mercer County, North Dakota · rated Good in the 2025 National Bridge Inventory
United States Bridge Conditions2025 National Bridge Inventory, FHWACompiled
- County Highway 9 over Antelope Creek in Mercer County, North Dakota, is rated in good condition in the 2025 National Bridge Inventory (as of ).
- Its lowest-rated component is the culvert, rated 7 (good condition) on the 0-9 scale.
- It was built in 1997, making it 28 years old at the 2025 inventory.
- It carries about 24 vehicles a day (traffic count year 2017).
- Its listed owner is the county highway agency.
- It is one of 24 of the 71 inventoried bridges in Mercer County rated good (33.8%); 4 (5.6%) 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 → (47.33523, -101.6953)
Component ratings
| Component | Rating (2025) | FHWA scale meaning |
|---|---|---|
| Culvert | 7 | Good condition |
Bridge details
| Structure | Concrete culvert |
| Length | about 22 ft |
| Location | 4 West 3 North of Hazen |
| NBI structure number | 000000029124161 |
| Condition class | Good |
Source: FHWA National Bridge Inventory, 2025 data as reported by the North Dakota department of transportation.
Busiest bridges in Mercer County
| Bridge | Built | Vehicles/day | Condition |
|---|---|---|---|
| Nd Highway 49 over Creek | 1967 | 3,730 | Fair |
| Nd Highway 49 over Knife River | 2016 | 3,400 | Good |
| Nd Highway 49 over Coyote Creek | 2016 | 2,745 | Good |
| Nd Highway 49 over Brush Creek | 2016 | 2,745 | Good |
| Nd Highway 200 over Knife River Overflow | 1952 | 2,300 | Fair |
| Nd Highway 200 over Knife River | 1966 | 2,280 | Fair |
All bridges nearby: Mercer County, ND bridge conditions · every bridge in Mercer County · North Dakota bridges.
Background: how bridge ratings work · what "poor" and "structurally deficient" actually mean · how often bridges are inspected.