US Bridges

Marten Creek RD over Trout Creek 054

Fair

Sanders County, Montana · 1M W Trout Creek · Structure no. L45046004+08001

Built
2010
15 years old
Condition
Fair
inspected July 2024
Type
Tee Beam
Prestressed Concrete
Length
96 ft
1 main span
Daily traffic
173
2023 count
Owner
County
County Highway Agency

About this bridge

Marten Creek RD over Trout Creek 054 is a prestressed concrete tee beam carrying Marten Creek RD over Trout Creek 054 in Sanders County, Montana. It was built in 2010, so it is 15 years old, younger 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 173 vehicles a day, roughly 3% of them trucks, projected to reach 185 by 2043. The structure is 96 ft (29.4 m) long and 32 ft wide. If it were closed, the detour would be 6.2 mi (10 km).

Location

Open in Google Maps
CarriesMarten Creek RD
CrossesTrout Creek 054
Location1M W Trout Creek
RouteCounty Highway 45001
CountySanders County
StateMontana
Coordinates47.84307, -115.61877
Functional classRural Minor Collector

Condition and inspection

Fair

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

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure8 Very GoodNo problems noted.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionJuly 2024
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 geometry6: Equal to present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating53 US tons
Inventory rating35.1 US tons

Structure

Structure typeTee Beam
MaterialPrestressed Concrete
DeckConcrete, precast panels
Main spans1
Design loadHL 93
Structure length96 ft (29.4 m)
Longest span94 ft (28.5 m)
Deck width32 ft (9.9 m)
Roadway width30 ft (9.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic173 (2023)
Projected traffic185 by 2043
Trucks3%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed6.2 mi (10 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 proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost$149,000
NavigationNo navigation control on waterway

Frequently asked questions

When was Marten Creek RD over Trout Creek 054 built?

It was built in 2010, making it 15 years old in 2025.

What condition is Marten Creek RD over Trout Creek 054 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 July 2024.

How much traffic does Marten Creek RD over Trout Creek 054 carry?

About 173 vehicles per day (2023 count), of which roughly 3% are trucks.

How long is Marten Creek RD over Trout Creek 054?

The structure is 96 ft (29.4 m) long with a longest span of 94 ft (28.5 m) and a deck 32 ft wide.

Who owns Marten Creek RD over Trout Creek 054?

It is owned by the County Highway Agency.