US Bridges

Connor Road over Skookumchuck River

Good

Thurston County, Washington · .03 E JCT SR507 · Structure no. 081819000000000

Built
1989
36 years old
Condition
Good
inspected October 2023
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
245 ft
3 main spans
Daily traffic
152
2020 count
Owner
County
County Highway Agency

About this bridge

Connor Road over Skookumchuck River is a prestressed concrete stringer/multi-beam or girder carrying Connor Road over Skookumchuck River in Thurston County, Washington. It was built in 1989, so it is 36 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 152 vehicles a day, roughly 15% of them trucks, projected to reach 244 by 2042. The structure is 245 ft (74.7 m) long and 28 ft wide. If it were closed, the detour would be 98.8 mi (159 km).

Location

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CarriesConnor Road
CrossesSkookumchuck River
Location.03 E JCT SR507
RouteCounty Highway 13675
CountyThurston County
StateWashington
Coordinates46.77833, -122.91177
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.
Substructure8 Very GoodNo problems noted.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionOctober 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating63.9 US tons
Inventory rating38 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length245 ft (74.7 m)
Longest span84 ft (25.6 m)
Deck width28 ft (8.5 m)
Roadway width26 ft (7.9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic152 (2020)
Projected traffic244 by 2042
Trucks15%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed98.8 mi (159 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCounty Highway Agency
Maintained byCounty Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost$9.2 million (2022 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was Connor Road over Skookumchuck River built?

It was built in 1989, making it 36 years old in 2025.

What condition is Connor Road over Skookumchuck 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 October 2023.

How much traffic does Connor Road over Skookumchuck River carry?

About 152 vehicles per day (2020 count), of which roughly 15% are trucks.

How long is Connor Road over Skookumchuck River?

The structure is 245 ft (74.7 m) long with a longest span of 84 ft (25.6 m) and a deck 28 ft wide.

Who owns Connor Road over Skookumchuck River?

It is owned by the County Highway Agency.