US Bridges

Mt 37 FH 57 over Sutton Creek

Fair

Lincoln County, Montana · 13M S Rexford · Structure no. P00033048+05241

Built
1974
51 years old
Condition
Fair
inspected August 2024
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
662 ft
3 main spans
Daily traffic
346
2023 count
Owner
State
State Highway Agency

About this bridge

Mt 37 FH 57 over Sutton Creek is a steel continuous stringer/multi-beam or girder carrying Mt 37 FH 57 over Sutton Creek in Lincoln County, Montana. It was built in 1974, so it is 51 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 6 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 346 vehicles a day, roughly 6% of them trucks, projected to reach 363 by 2043. The structure is 662 ft (201.7 m) long and 41 ft wide. If it were closed, the detour would be 123.7 mi (199 km).

CarriesMt 37 FH 57
CrossesSutton Creek
Location13M S Rexford
RouteState Highway 37
StateMontana
Coordinates48.75988, -115.28546
Functional classRural Minor Arterial

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.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionAugust 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation3: Basically intolerable, requiring high priority of corrective action
Deck geometry9: Superior to present desirable criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating10 US tons
Inventory rating8 US tons

Structure

MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans3 (+1 approach)
Design loadHS 20
Structure length662 ft (201.7 m)
Longest span228 ft (69.5 m)
Deck width41 ft (12.6 m)
Roadway width37 ft (11.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic346 (2023)
Projected traffic363 by 2043
Trucks6%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed123.7 mi (199 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 Mt 37 FH 57 over Sutton Creek built?

It was built in 1974, making it 51 years old in 2025.

What condition is Mt 37 FH 57 over Sutton Creek 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 August 2024.

How much traffic does Mt 37 FH 57 over Sutton Creek carry?

About 346 vehicles per day (2023 count), of which roughly 6% are trucks.

How long is Mt 37 FH 57 over Sutton Creek?

The structure is 662 ft (201.7 m) long with a longest span of 228 ft (69.5 m) and a deck 41 ft wide.

Who owns Mt 37 FH 57 over Sutton Creek?

It is owned by the State Highway Agency.