US Bridges

US 101 over Lake Crescent

Fair

Clallam County, Washington · 25.7 N JCT SR 113 · Structure no. 0003673A0000000

Built
1949
76 years old
Condition
Fair
inspected September 2024
Type
Girder and Floorbeam System
Concrete
Length
85 ft
1 main span
Daily traffic
2,834
2023 count
Owner
State
State Highway Agency

About this bridge

US 101 over Lake Crescent is a concrete girder and floorbeam system carrying US 101 over Lake Crescent in Clallam County, Washington. It was built in 1949, so it is 76 years old, older than the Washington average of 49.8 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 2,834 vehicles a day, roughly 11% of them trucks, projected to reach 3,074 by 2039. The structure is 85 ft (25.9 m) long and 28 ft wide. If it were closed, the detour would be 49.7 mi (80 km).

Location

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CarriesUS 101
CrossesLake Crescent
Location25.7 N JCT SR 113
RouteU.S. Route 101
CountyClallam County
StateWashington
Coordinates48.07231, -123.77389
Functional classRural Principal Arterial - Other

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.
Superstructure7 GoodSome minor problems.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionSeptember 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating25.7 US tons
Inventory rating20 US tons

Structure

Structure typeGirder and Floorbeam System
MaterialConcrete
DeckConcrete, cast-in-place
Main spans1 (+2 approach)
Design loadHS 20
Structure length85 ft (25.9 m)
Longest span56 ft (17.1 m)
Deck width28 ft (8.4 m)
Roadway width29 ft (8.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic2,834 (2023)
Projected traffic3,074 by 2039
Trucks11%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed49.7 mi (80 km)
TollOn a free road
National Highway SystemYes

Ownership and planned work

OwnerState Highway Agency
Maintained byState Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedRehabilitation because of general structure deterioration or inadequate strength
Estimated improvement cost$1.3 million (2022 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was US 101 over Lake Crescent built?

It was built in 1949, making it 76 years old in 2025.

What condition is US 101 over Lake Crescent 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 September 2024.

How much traffic does US 101 over Lake Crescent carry?

About 2,834 vehicles per day (2023 count), of which roughly 11% are trucks.

How long is US 101 over Lake Crescent?

The structure is 85 ft (25.9 m) long with a longest span of 56 ft (17.1 m) and a deck 28 ft wide.

Who owns US 101 over Lake Crescent?

It is owned by the State Highway Agency.