US Bridges

SR 110 Spur over Sol Duc River

Good

Clallam County, Washington · 0.3 W JCT SR 110 · Structure no. 0015346A0000000

Built
1998
27 years old
Condition
Good
inspected August 2024
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
326 ft
2 main spans
Daily traffic
667
2023 count
Owner
State
State Highway Agency

About this bridge

SR 110 Spur over Sol Duc River is a steel continuous stringer/multi-beam or girder carrying SR 110 Spur over Sol Duc River in Clallam County, Washington. It was built in 1998, so it is 27 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 667 vehicles a day, roughly 6% of them trucks, projected to reach 881 by 2039. The structure is 326 ft (99.4 m) long and 34 ft wide. If it were closed, the detour would be 41 mi (66 km).

CarriesSR 110 Spur
CrossesSol Duc River
Location0.3 W JCT SR 110
RouteState Highway 110
Coordinates47.91466, -124.54105
Functional classRural Major Collector

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.
Substructure7 GoodSome minor problems.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionAugust 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Deck geometry6: Equal to present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating73 US tons
Inventory rating44 US tons

Structure

MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans2
Design loadHS 25 or greater
Structure length326 ft (99.4 m)
Longest span170 ft (51.8 m)
Deck width34 ft (10.5 m)
Roadway width31 ft (9.6 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic667 (2023)
Projected traffic881 by 2039
Trucks6%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed41 mi (66 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerState Highway Agency
Maintained byState Highway Agency
Historic statusHistorical significance not determinable at this time
Work proposedRehabilitation because of general structure deterioration or inadequate strength
Estimated improvement cost$4 million (2022 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was SR 110 Spur over Sol Duc River built?

It was built in 1998, making it 27 years old in 2025.

What condition is SR 110 Spur over Sol Duc River 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 SR 110 Spur over Sol Duc River carry?

About 667 vehicles per day (2023 count), of which roughly 6% are trucks.

How long is SR 110 Spur over Sol Duc River?

The structure is 326 ft (99.4 m) long with a longest span of 170 ft (51.8 m) and a deck 34 ft wide.

Who owns SR 110 Spur over Sol Duc River?

It is owned by the State Highway Agency.