US Bridges

Road 4209 over North Creek

Good

Missoula County, Montana · North Creek · Structure no. 011603000012284

Built
2008
17 years old
Condition
Good
inspected August 2024
Type
Stringer/Multi-beam or Girder
Wood or Timber
Length
34 ft
1 main span
Daily traffic
40
Owner
Federal
U.S. Forest Service

About this bridge

Road 4209 over North Creek is a wood or timber stringer/multi-beam or girder carrying Road 4209 over North Creek in Missoula County, Montana. It was built in 2008, so it is 17 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 40 vehicles a day, projected to reach 60 by 2045. The structure is 34 ft (10.3 m) long and 16 ft wide. If it were closed, the detour would be 98.2 mi (158 km).

CarriesRoad 4209
CrossesNorth Creek
LocationNorth Creek
RouteFederal Lands Road 4209
StateMontana
Coordinates46.73236, -114.58384
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
Deck7 GoodSome minor problems.
Superstructure8 Very GoodNo problems noted.
Substructure8 Very GoodNo problems noted.
Channel and channel protection7 GoodSome minor problems.
Last inspectionAugust 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation6: Equal to present minimum criteria
Deck geometry6: Equal to present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating37.5 US tons
Inventory rating28.9 US tons

Structure

MaterialWood or Timber
DeckWood or timber
Main spans1
Design loadH 20
Structure length34 ft (10.3 m)
Longest span32 ft (9.8 m)
Deck width16 ft (4.9 m)
Roadway width14 ft (4.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic40 (—)
Projected traffic60 by 2045
Trucks—
Lanes on structure1
Traffic directionOne-lane bridge for two-way traffic
CarriesHighway
CrossesWaterway
Detour if closed98.2 mi (158 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerU.S. Forest Service
Maintained byU.S. Forest Service
Historic statusHistorical significance not determinable at this time
Work proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was Road 4209 over North Creek built?

It was built in 2008, making it 17 years old in 2025.

What condition is Road 4209 over North Creek 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 August 2024.

How much traffic does Road 4209 over North Creek carry?

About 40 vehicles per day (latest count).

How long is Road 4209 over North Creek?

The structure is 34 ft (10.3 m) long with a longest span of 32 ft (9.8 m) and a deck 16 ft wide.

Who owns Road 4209 over North Creek?

It is owned by the U.S. Forest Service.