US Bridges

Road 50 N over Sage Creek 025

Good

Hill County, Montana · 8M NW Gilford · Structure no. 000000000003142

Built
2017
8 years old
Condition
Good
inspected December 2023
Type
Culvert
Steel
Length
30 ft
2 main spans
Daily traffic
100
2025 count
Owner
County
County Highway Agency

About this bridge

Road 50 N over Sage Creek 025 is a steel culvert carrying Road 50 N over Sage Creek 025 in Hill County, Montana. It was built in 2017, so it is 8 years old, younger than the Montana average of 47 years.

The most recent inspection reported to the Federal Highway Administration rates it in good condition with a lowest component rating of 7 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 100 vehicles a day, roughly 3% of them trucks, projected to reach 100 by 2040. The structure is 30 ft (9.1 m) long and 55 ft wide. If it were closed, the detour would be 19.9 mi (32 km).

CarriesRoad 50 N
CrossesSage Creek 025
Location8M NW Gilford
RouteCounty Highway 21091
StateMontana
Coordinates48.63856, -110.36418
Functional classRural Local

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Culvert7 GoodSome minor problems.
Last inspectionDecember 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Deck geometry9: Superior to present desirable criteria
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment5: Somewhat better than minimum adequacy to tolerate being left in place as is
Operating rating43.5 US tons
Inventory rating36 US tons

Structure

Structure typeCulvert
MaterialSteel
DeckNot applicable
Main spans2
Design loadUnknown
Structure length30 ft (9.1 m)
Longest span14 ft (4.2 m)
Deck width55 ft (16.8 m)
Roadway width39 ft (11.9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic100 (2025)
Projected traffic100 by 2040
Trucks3%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed19.9 mi (32 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCounty Highway Agency
Maintained byCounty 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 Road 50 N over Sage Creek 025 built?

It was built in 2017, making it 8 years old in 2025.

What condition is Road 50 N over Sage Creek 025 in?

The National Bridge Inventory rates it in good condition. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted. The last reported inspection was in December 2023.

How much traffic does Road 50 N over Sage Creek 025 carry?

About 100 vehicles per day (2025 count), of which roughly 3% are trucks.

How long is Road 50 N over Sage Creek 025?

The structure is 30 ft (9.1 m) long with a longest span of 14 ft (4.2 m) and a deck 55 ft wide.

Who owns Road 50 N over Sage Creek 025?

It is owned by the County Highway Agency.