US Bridges

Project and Public over The Dalles Dam

Poor

Klickitat County, Washington · North Access Br over Sp&s · Structure no. CEPNPPWA000TD06

Built
1956
69 years old
Condition
Poor
inspected September 2024
Type
Stringer/Multi-beam or Girder
Concrete
Length
110 ft
3 main spans
Daily traffic
100
2024 count
Owner
Federal
Corps of Engineers (Civil)

About this bridge

Project and Public over The Dalles Dam is a concrete stringer/multi-beam or girder carrying Project and Public over The Dalles Dam in Klickitat County, Washington. It was built in 1956, so it is 69 years old, older than the Washington average of 49.8 years.

The most recent inspection reported to the Federal Highway Administration rates it in poor condition with a lowest component rating of 4 out of 9. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.

It carries about 100 vehicles a day, roughly 10% of them trucks, projected to reach 100 by 2046. The structure is 110 ft (33.4 m) long and 29 ft wide. If it were closed, the detour would be 16.2 mi (26 km).

CarriesProject and Public
CrossesThe Dalles Dam
LocationNorth Access Br over Sp&s
RouteFederal Lands Road 0
Coordinates45.61509, -121.14157
Functional classRural Local

Condition and inspection

Poor

The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.

ComponentRatingMeaning
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure4 PoorAdvanced section loss, deterioration, spalling or scour.
Last inspectionSeptember 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation4: Meets minimum tolerable limits to be left in place as is
Deck geometry6: Equal to present minimum criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating41.1 US tons
Inventory rating31.7 US tons

Structure

MaterialConcrete
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length110 ft (33.4 m)
Longest span38 ft (11.7 m)
Deck width29 ft (8.8 m)
Roadway width24 ft (7.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic100 (2024)
Projected traffic100 by 2046
Trucks10%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesRailroad
Detour if closed16.2 mi (26 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCorps of Engineers (Civil)
Maintained byCorps of Engineers (Civil)
Historic statusHistorical significance not determinable at this time
Work proposedOther structural work, including hydraulic replacements
Estimated improvement cost$426,000 (2025 estimate)
NavigationNot applicable (no waterway)

Frequently asked questions

When was Project and Public over The Dalles Dam built?

It was built in 1956, making it 69 years old in 2025.

What condition is Project and Public over The Dalles Dam in?

The National Bridge Inventory rates it in poor condition. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions. The last reported inspection was in September 2024.

How much traffic does Project and Public over The Dalles Dam carry?

About 100 vehicles per day (2024 count), of which roughly 10% are trucks.

How long is Project and Public over The Dalles Dam?

The structure is 110 ft (33.4 m) long with a longest span of 38 ft (11.7 m) and a deck 29 ft wide.

Who owns Project and Public over The Dalles Dam?

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