US Bridges

Road over Harlan Creek

Good

King County, Washington · 4.4 MI N of HWY 2/65 JCT · Structure no. 060506000001539

Built
1991
34 years old
Condition
Good
inspected June 2021
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
77 ft
1 main span
Daily traffic
114
1991 count
Owner
Federal
U.S. Forest Service

About this bridge

Road over Harlan Creek is a prestressed concrete stringer/multi-beam or girder carrying Road over Harlan Creek in King County, Washington. It was built in 1991, so it is 34 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 114 vehicles a day, roughly 2% of them trucks, projected to reach 171 by 2045. The structure is 77 ft (23.5 m) long and 30 ft wide. If it were closed, the detour would be 39.8 mi (64 km).

CarriesRoad
CrossesHarlan Creek
Location4.4 MI N of HWY 2/65 JCT
RouteFederal Lands Road 65
Coordinates47.77545, -121.30278
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.
Superstructure7 GoodSome minor problems.
Substructure8 Very GoodNo problems noted.
Channel and channel protection7 GoodSome minor problems.
Last inspectionJune 2021
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation7: Better than 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 rating90.1 US tons
Inventory rating54 US tons

Structure

MaterialPrestressed Concrete
DeckOther
Main spans1
Design loadHS 25 or greater
Structure length77 ft (23.5 m)
Longest span74 ft (22.7 m)
Deck width30 ft (9.2 m)
Roadway width28 ft (8.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic114 (1991)
Projected traffic171 by 2045
Trucks2%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed39.8 mi (64 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 over Harlan Creek built?

It was built in 1991, making it 34 years old in 2025.

What condition is Road over Harlan 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 over Harlan Creek carry?

About 114 vehicles per day (1991 count), of which roughly 2% are trucks.

How long is Road over Harlan Creek?

The structure is 77 ft (23.5 m) long with a longest span of 74 ft (22.7 m) and a deck 30 ft wide.

Who owns Road over Harlan Creek?

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