Bridge conditions in Phillips County, Montana
101 inventoried bridges · 22 rated poor · 2025 National Bridge Inventory
United States Bridge Conditions2025 National Bridge Inventory, FHWACompiled
About one in 5 bridges in Phillips County is rated in poor condition: 22 of 101 on the federal inventory, one of the higher shares in Montana.
- 22 of the 101 bridges in Phillips County, Montana, are rated in poor condition (21.8%) in the 2025 National Bridge Inventory, as of .
- 13 bridges (12.9%) are rated good and 66 (65.3%) fair.
- The median Phillips County bridge was built in 1976.
- The busiest poor-rated bridge is Irr - US 2 over Drainage (built 1973), carrying about 1,351 vehicles a day.
Good 12.9% · Fair 65.3% · Poor 21.8% of 101 bridges
Bridges rated poor
Every bridge in the county with a poor rating, busiest first. Poor means a major component is rated 4 or lower on FHWA's 0-9 scale; it is a repair flag, not a closure notice.
| Bridge | Built | Vehicles/day | Condition |
|---|---|---|---|
| Irr - US 2 over Drainage | 1973 | 1,351 | Poor |
| Irr - US 191 over Wild Horse Creek | 1941 | 395 | Poor |
| Irr - US 191 over Wild Horse Creek | 1940 | 395 | Poor |
| Irr Bia Route 8 over Peoples Creek | 1976 | 200 | Poor |
| Youth Ranch Rd over Whitewater Creek 110 | 1977 | 100 | Poor |
| Content Rd over Sage Creek Overflow 055 | 1983 | 100 | Poor |
| Stage Rd over Wild Horse Creek 023 | 1925 | 100 | Poor |
| Stage Rd over Spring Coulee 024 | 1965 | 100 | Poor |
| Stage Rd over Big Warm Creek 027 | 2004 | 100 | Poor |
| Upper Harb Rd over Drainage 057 | 1950 | 100 | Poor |
| Hog Ranch Rd over Big Warm Creek 026 | 1960 | 100 | Poor |
| Alkali Rd over Alkali Creek 001 | 1920 | 100 | Poor |
| Lower Harb Rd over Beaver Creek 092 | 1968 | 100 | Poor |
| Regina Rd over Telegraph Creek 040 | 1940 | 100 | Poor |
| County Rd 244 over Beaver Creek 132 | 1915 | 100 | Poor |
| S 5TH Ave E over Dodson South Canal 131 | 1986 | 100 | Poor |
| Black Coulee Rd over Black Coulee 072 | 1950 | 49 | Poor |
| Regina Rd over Beaver Creek 049 | 1983 | 45 | Poor |
| S 243 over Whitewater Creek | 1976 | 39 | Poor |
| Strater Rd over Dodson South Canal 116 | 1938 | 33 | Poor |
| County Road 055 over Dodson North Canal 013 | 1986 | 5 | Poor |
| Road 101 over Duval Coulee | 2006 | – | Poor |
Busiest bridges in the county
| Bridge | Built | Vehicles/day | Condition |
|---|---|---|---|
| US 2 over Milk River | 1952 | 3,681 | Fair |
| US 191 over Dodson South Canal | 2000 | 2,221 | Fair |
| US 2 over Exeter Creek | 1990 | 1,474 | Good |
| US 2 over Beaver Creek Overflow | 1968 | 1,409 | Fair |
| US 2 over Beaver Creek Overflow | 1968 | 1,409 | Fair |
| US 2 over Beaver Creek | 1966 | 1,409 | Fair |
| US 2 over Beaver Creek | 2003 | 1,409 | Fair |
| US 2 over Dodson South Canal | 1966 | 1,363 | Fair |
| Irr - US 2 over Drainage | 1973 | 1,351 | Poor |
| US 2 over Dodson North Canal | 1976 | 1,351 | Fair |
Source: FHWA National Bridge Inventory, 2025. Counts cover inventoried highway bridges over 20 feet; ratings are reported by the state DOT.
All of Montana: Montana bridge conditions by county · every download on the data page.
Background: how bridge ratings work · what "poor" and "structurally deficient" actually mean · how often bridges are inspected.