US Bridges

Old US 10 over Bridger Creek 040

Fair

Sweet Grass County, Montana · 6M SE Greycliff · Structure no. L49125012+07001

Built
1931
94 years old
Condition
Fair
inspected November 2023
Type
Tee Beam
Concrete
Length
96 ft
3 main spans
Daily traffic
344
2023 count
Owner
State
State Highway Agency

About this bridge

Old US 10 over Bridger Creek 040 is a concrete tee beam carrying Old US 10 over Bridger Creek 040 in Sweet Grass County, Montana. It was built in 1931, so it is 94 years old, older than the Montana average of 47 years.

The most recent inspection reported to the Federal Highway Administration rates it in fair condition with a lowest component rating of 5 out of 9. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

It carries about 344 vehicles a day, roughly 3% of them trucks, projected to reach 363 by 2043. The structure is 96 ft (29.3 m) long and 23 ft wide. If it were closed, the detour would be 16.2 mi (26 km).

Location

Open in Google Maps
CarriesOld US 10
CrossesBridger Creek 040
Location6M SE Greycliff
RouteState Highway 81014
CountySweet Grass County
StateMontana
Coordinates45.73195, -109.67917
Functional classRural Local

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionNovember 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating47 US tons
Inventory rating28 US tons

Structure

Structure typeTee Beam
MaterialConcrete
DeckConcrete, cast-in-place
Main spans3
Design loadHS 15
Structure length96 ft (29.3 m)
Longest span32 ft (9.8 m)
Deck width23 ft (7 m)
Roadway width22 ft (6.7 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic344 (2023)
Projected traffic363 by 2043
Trucks3%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed16.2 mi (26 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerState Highway Agency
Maintained byState Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was Old US 10 over Bridger Creek 040 built?

It was built in 1931, making it 94 years old in 2025.

What condition is Old US 10 over Bridger Creek 040 in?

The National Bridge Inventory rates it in fair condition. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound. The last reported inspection was in November 2023.

How much traffic does Old US 10 over Bridger Creek 040 carry?

About 344 vehicles per day (2023 count), of which roughly 3% are trucks.

How long is Old US 10 over Bridger Creek 040?

The structure is 96 ft (29.3 m) long with a longest span of 32 ft (9.8 m) and a deck 23 ft wide.

Who owns Old US 10 over Bridger Creek 040?

It is owned by the State Highway Agency.