US Bridges

Marten Creek RD over Marten Creek 026

Fair

Sanders County, Montana · 7M S Noxon · Structure no. L45044000+01001

Built
1968
57 years old
Condition
Fair
inspected June 2024
Type
Stringer/Multi-beam or Girder
Wood or Timber
Length
86 ft
4 main spans
Daily traffic
173
2023 count
Owner
County
County Highway Agency

About this bridge

Marten Creek RD over Marten Creek 026 is a wood or timber stringer/multi-beam or girder carrying Marten Creek RD over Marten Creek 026 in Sanders County, Montana. It was built in 1968, so it is 57 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 173 vehicles a day, roughly 3% of them trucks, projected to reach 185 by 2043. The structure is 86 ft (26.1 m) long and 26 ft wide. If it were closed, the detour would be 29.8 mi (48 km).

Location

Open in Google Maps
CarriesMarten Creek RD
CrossesMarten Creek 026
Location7M S Noxon
RouteCounty Highway 45001
CountySanders County
StateMontana
Coordinates47.88047, -115.74984
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
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure7 GoodSome minor problems.
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 inspectionJune 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 geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating44.3 US tons
Inventory rating31.7 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialWood or Timber
DeckWood or timber
Main spans4
Design loadUnknown
Structure length86 ft (26.1 m)
Longest span25 ft (7.7 m)
Deck width26 ft (7.9 m)
Roadway width24 ft (7.3 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 closed29.8 mi (48 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$362,000
NavigationNo navigation control on waterway

Frequently asked questions

When was Marten Creek RD over Marten Creek 026 built?

It was built in 1968, making it 57 years old in 2025.

What condition is Marten Creek RD over Marten Creek 026 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 June 2024.

How much traffic does Marten Creek RD over Marten Creek 026 carry?

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

How long is Marten Creek RD over Marten Creek 026?

The structure is 86 ft (26.1 m) long with a longest span of 25 ft (7.7 m) and a deck 26 ft wide.

Who owns Marten Creek RD over Marten Creek 026?

It is owned by the County Highway Agency.