US Bridges

SR 14 over Bn RR

Fair

Skamania County, Washington · 18.7 E Clark CO · Structure no. 000034CE0000000

Built
1978
47 years old
Condition
Fair
inspected April 2024
Type
Stringer/Multi-beam or Girder
Prestressed Concrete Continuous
Length
319 ft
3 main spans
Daily traffic
5,217
2023 count
Owner
State
State Highway Agency

About this bridge

SR 14 over Bn RR is a prestressed concrete continuous stringer/multi-beam or girder carrying SR 14 over Bn RR in Skamania County, Washington. It was built in 1978, so it is 47 years old, younger 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 5,217 vehicles a day, roughly 12% of them trucks, projected to reach 6,469 by 2039. The structure is 319 ft (97.2 m) long and 47 ft wide. If it were closed, the detour would be 98.8 mi (159 km).

Location

Open in Google Maps
CarriesSR 14
CrossesBn RR
Location18.7 E Clark CO
RouteState Highway 14
CountySkamania County
StateWashington
Coordinates45.65156, -121.92306
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
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Last inspectionApril 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation3: Basically intolerable, requiring high priority of corrective action
Deck geometry6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating30 US tons
Inventory rating13.2 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20 + Mod
Structure length319 ft (97.2 m)
Longest span115 ft (35.1 m)
Deck width47 ft (14.3 m)
Roadway width44 ft (13.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic5,217 (2023)
Projected traffic6,469 by 2039
Trucks12%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesRailroad
Detour if closed98.8 mi (159 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$6.4 million (2022 estimate)
NavigationNot applicable (no waterway)

Frequently asked questions

When was SR 14 over Bn RR built?

It was built in 1978, making it 47 years old in 2025.

What condition is SR 14 over Bn RR 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 Bn RR carry?

About 5,217 vehicles per day (2023 count), of which roughly 12% are trucks.

How long is SR 14 over Bn RR?

The structure is 319 ft (97.2 m) long with a longest span of 115 ft (35.1 m) and a deck 47 ft wide.

Who owns SR 14 over Bn RR?

It is owned by the State Highway Agency.