US Bridges

SR 14 over Rock CR

Fair

Skamania County, Washington · 22.1 E Clark CO · Structure no. 0002355A0000000

Built
1938
87 years old
Condition
Fair
inspected April 2024
Type
Tee Beam
Concrete Continuous
Length
200 ft
5 main spans
Daily traffic
6,440
2023 count
Owner
State
State Highway Agency

About this bridge

SR 14 over Rock CR is a concrete continuous tee beam carrying SR 14 over Rock CR in Skamania County, Washington. It was built in 1938, so it is 87 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 6,440 vehicles a day, roughly 8% of them trucks, projected to reach 8,200 by 2039. The structure is 200 ft (61 m) long and 31 ft wide. If it were closed, the detour would be 3.1 mi (5 km).

Location

Open in Google Maps
CarriesSR 14
CrossesRock CR
Location22.1 E Clark CO
RouteState Highway 14
CountySkamania County
StateWashington
Coordinates45.68976, -121.88914
Functional classRural Principal Arterial - Other

Condition and inspection

Fair

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

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection3 SeriousLoss of section, deterioration, spalling or scour have seriously affected primary structural components.
Last inspectionApril 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation3: Basically intolerable, requiring high priority of corrective action
Deck geometry2: Basically intolerable, requiring high priority of replacement
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating17.2 US tons
Inventory rating13.2 US tons

Structure

Structure typeTee Beam
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans5
Design loadH 15
Structure length200 ft (61 m)
Longest span67 ft (20.4 m)
Deck width31 ft (9.5 m)
Roadway width24 ft (7.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic6,440 (2023)
Projected traffic8,200 by 2039
Trucks8%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesWaterway
Detour if closed3.1 mi (5 km)
TollOn a free road
National Highway SystemYes

Ownership and planned work

OwnerState Highway Agency
Maintained byState Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedRehabilitation because of general structure deterioration or inadequate strength
Estimated improvement cost$3.1 million (2022 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was SR 14 over Rock CR built?

It was built in 1938, making it 87 years old in 2025.

What condition is SR 14 over Rock CR 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 April 2024.

How much traffic does SR 14 over Rock CR carry?

About 6,440 vehicles per day (2023 count), of which roughly 8% are trucks.

How long is SR 14 over Rock CR?

The structure is 200 ft (61 m) long with a longest span of 67 ft (20.4 m) and a deck 31 ft wide.

Who owns SR 14 over Rock CR?

It is owned by the State Highway Agency.