US Bridges

South Shore Road over Bunch Creek

Good

Jefferson County, Washington · 12.4 Mi. NE of Jct. Hwy. · Structure no. 9500020P0000000

Built
1981
44 years old
Condition
Good
inspected August 2023
Type
Slab
Prestressed Concrete
Length
63 ft
1 main span
Daily traffic
200
2011 count
Owner
Federal
National Park Service

About this bridge

South Shore Road over Bunch Creek is a prestressed concrete slab carrying South Shore Road over Bunch Creek in Jefferson County, Washington. It was built in 1981, so it is 44 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 200 vehicles a day, roughly 2% of them trucks, projected to reach 400 by 2031. The structure is 63 ft (19.2 m) long and 29 ft wide. If it were closed, the detour would be 3.7 mi (6 km).

CarriesSouth Shore Road
CrossesBunch Creek
Location12.4 Mi. NE of Jct. Hwy.
RouteFederal Lands Road 105
Coordinates47.52928, -123.696
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.
Substructure7 GoodSome minor problems.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionAugust 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation7: Better than present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating87 US tons
Inventory rating39 US tons

Structure

Structure typeSlab
MaterialPrestressed Concrete
DeckConcrete, precast panels
Main spans1
Design loadHS 20
Structure length63 ft (19.2 m)
Longest span60 ft (18.2 m)
Deck width29 ft (8.8 m)
Roadway width26 ft (7.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic200 (2011)
Projected traffic400 by 2031
Trucks2%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.7 mi (6 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerNational Park Service
Maintained byNational Park Service
Historic statusNot eligible for the National Register of Historic Places
Work proposedNone recorded
Estimated improvement cost$38,000
NavigationNo navigation control on waterway

Frequently asked questions

When was South Shore Road over Bunch Creek built?

It was built in 1981, making it 44 years old in 2025.

What condition is South Shore Road over Bunch 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 August 2023.

How much traffic does South Shore Road over Bunch Creek carry?

About 200 vehicles per day (2011 count), of which roughly 2% are trucks.

How long is South Shore Road over Bunch Creek?

The structure is 63 ft (19.2 m) long with a longest span of 60 ft (18.2 m) and a deck 29 ft wide.

Who owns South Shore Road over Bunch Creek?

It is owned by the National Park Service.