US Bridges

South Shore Bridge over South Shore Access

Fair

Garfield County, Washington · Lower Granite Dam · Structure no. CEPNPWWA0LGRSAR

Built
1973
52 years old
Condition
Fair
inspected January 2025
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
737 ft
9 main spans
Daily traffic
150
2012 count
Owner
Federal
Corps of Engineers (Civil)

About this bridge

South Shore Bridge over South Shore Access is a prestressed concrete stringer/multi-beam or girder carrying South Shore Bridge over South Shore Access in Garfield County, Washington. It was built in 1973, so it is 52 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 150 vehicles a day, roughly 10% of them trucks, projected to reach 200 by 2045. The structure is 737 ft (224.7 m) long and 30 ft wide. If it were closed, the detour would be 65.2 mi (105 km).

CarriesSouth Shore Bridge
CrossesSouth Shore Access
LocationLower Granite Dam
Coordinates46.65756, -117.43301
Functional classRural Minor Collector

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure7 GoodSome minor problems.
Last inspectionJanuary 2025
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation6: Equal to present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating64.3 US tons
Inventory rating49.6 US tons

Structure

MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans9
Design loadHS 20
Structure length737 ft (224.7 m)
Longest span82 ft (24.9 m)
Deck width30 ft (9.2 m)
Roadway width26 ft (8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic150 (2012)
Projected traffic200 by 2045
Trucks10%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesOther
Detour if closed65.2 mi (105 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCorps of Engineers (Civil)
Maintained byCorps of Engineers (Civil)
Historic statusNot eligible for the National Register of Historic Places
Work proposedNone recorded
Estimated improvement cost$2.2 million (2025 estimate)
NavigationNot applicable (no waterway)

Frequently asked questions

When was South Shore Bridge over South Shore Access built?

It was built in 1973, making it 52 years old in 2025.

What condition is South Shore Bridge over South Shore Access 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 January 2025.

How much traffic does South Shore Bridge over South Shore Access carry?

About 150 vehicles per day (2012 count), of which roughly 10% are trucks.

How long is South Shore Bridge over South Shore Access?

The structure is 737 ft (224.7 m) long with a longest span of 82 ft (24.9 m) and a deck 30 ft wide.

Who owns South Shore Bridge over South Shore Access?

It is owned by the Corps of Engineers (Civil).