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Bridge conditions in Phillips County, Montana

101 inventoried bridges · 22 rated poor · 2025 National Bridge Inventory

United States Bridge Conditions2025 National Bridge Inventory, FHWACompiled August 20, 2026

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 August 20, 2026.
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.

Every bridge in Phillips County → - all 101, busiest first, each with its own condition record.

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.