US Bridges

North Fork RD over Red Meadow Creek 037

Fair

Flathead County, Montana · 3M NW Polebridge · Structure no. L15175017+01001

Built
1980
45 years old
Condition
Fair
inspected August 2023
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
103 ft
1 main span
Daily traffic
516
2023 count
Owner
County
County Highway Agency

About this bridge

North Fork RD over Red Meadow Creek 037 is a prestressed concrete stringer/multi-beam or girder carrying North Fork RD over Red Meadow Creek 037 in Flathead County, Montana. It was built in 1980, so it is 45 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 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 516 vehicles a day, roughly 3% of them trucks, projected to reach 552 by 2043. The structure is 103 ft (31.4 m) long and 31 ft wide. If it were closed, the detour would be 123.7 mi (199 km).

CarriesNorth Fork RD
CrossesRed Meadow Creek 037
Location3M NW Polebridge
RouteCounty Highway 15175
StateMontana
Coordinates48.80695, -114.34792
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.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure7 GoodSome minor problems.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionAugust 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
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 rating53.2 US tons
Inventory rating41.1 US tons

Structure

MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans1
Design loadHS 20
Structure length103 ft (31.4 m)
Longest span100 ft (30.5 m)
Deck width31 ft (9.4 m)
Roadway width28 ft (8.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic516 (2023)
Projected traffic552 by 2043
Trucks3%
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

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 North Fork RD over Red Meadow Creek 037 built?

It was built in 1980, making it 45 years old in 2025.

What condition is North Fork RD over Red Meadow Creek 037 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 2023.

How much traffic does North Fork RD over Red Meadow Creek 037 carry?

About 516 vehicles per day (2023 count), of which roughly 3% are trucks.

How long is North Fork RD over Red Meadow Creek 037?

The structure is 103 ft (31.4 m) long with a longest span of 100 ft (30.5 m) and a deck 31 ft wide.

Who owns North Fork RD over Red Meadow Creek 037?

It is owned by the County Highway Agency.