US Bridges

Road #39 over Grouse Creek

Good

Whatcom County, Washington · 7.9 Miles from SH #542 · Structure no. 060501000001642

Built
1996
29 years old
Condition
Good
inspected June 2021
Type
Slab
Prestressed Concrete
Length
56 ft
1 main span
Daily traffic
20
1996 count
Owner
Federal
U.S. Forest Service

About this bridge

Road #39 over Grouse Creek is a prestressed concrete slab carrying Road #39 over Grouse Creek in Whatcom County, Washington. It was built in 1996, so it is 29 years old, younger than the Washington average of 49.8 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 20 vehicles a day, projected to reach 30 by 2045. The structure is 56 ft (17.1 m) long and 20 ft wide. If it were closed, the detour would be 98.2 mi (158 km).

CarriesRoad #39
CrossesGrouse Creek
Location7.9 Miles from SH #542
RouteFederal Lands Road 39000
Coordinates48.80393, -121.89727
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
Deck8 Very GoodNo problems noted.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionJune 2021
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Deck geometry3: Basically intolerable, requiring high priority of corrective action
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment3: Basically intolerable, requiring high priority of corrective action
Operating rating100.1 US tons
Inventory rating71.1 US tons

Structure

Structure typeSlab
MaterialPrestressed Concrete
DeckOther
Main spans1
Design loadHS 25 or greater
Structure length56 ft (17.1 m)
Longest span55 ft (16.8 m)
Deck width20 ft (6.2 m)
Roadway width18 ft (5.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic20 (1996)
Projected traffic30 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 #39 over Grouse Creek built?

It was built in 1996, making it 29 years old in 2025.

What condition is Road #39 over Grouse 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 June 2021.

How much traffic does Road #39 over Grouse Creek carry?

About 20 vehicles per day (1996 count).

How long is Road #39 over Grouse Creek?

The structure is 56 ft (17.1 m) long with a longest span of 55 ft (16.8 m) and a deck 20 ft wide.

Who owns Road #39 over Grouse Creek?

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