US Bridges

SR 14 over Bn RR

Poor

Clark County, Washington · 4.1 E JCT SR 500 · Structure no. 0009275C0000000

Built
1972
53 years old
Condition
Poor
inspected April 2024
Type
Stringer/Multi-beam or Girder
Prestressed Concrete Continuous
Length
382 ft
4 main spans
Daily traffic
6,000
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 Clark County, Washington. It was built in 1972, so it is 53 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 6,000 vehicles a day, roughly 13% of them trucks, projected to reach 9,133 by 2039. The structure is 382 ft (116.4 m) long and 43 ft wide. If it were closed, the detour would be 3.7 mi (6 km).

Location

Open in Google Maps
CarriesSR 14
CrossesBn RR
Location4.1 E JCT SR 500
RouteState Highway 14
CountyClark County
StateWashington
Coordinates45.57147, -122.30194
Functional classRural Principal Arterial - Other

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
Deck4 PoorAdvanced section loss, deterioration, spalling or scour.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Last inspectionApril 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation7: Better than present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Approach roadway alignment8: Equal to present desirable criteria
Operating rating96 US tons
Inventory rating58 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete Continuous
DeckConcrete, cast-in-place
Main spans4
Design loadHS 20 + Mod
Structure length382 ft (116.4 m)
Longest span106 ft (32.3 m)
Deck width43 ft (13.1 m)
Roadway width40 ft (12.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic6,000 (2023)
Projected traffic9,133 by 2039
Trucks13%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesRailroad
Detour if closed3.7 mi (6 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$7.6 million (2022 estimate)
NavigationNot applicable (no waterway)

Frequently asked questions

When was SR 14 over Bn RR built?

It was built in 1972, making it 53 years old in 2025.

What condition is SR 14 over Bn RR 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 April 2024.

How much traffic does SR 14 over Bn RR carry?

About 6,000 vehicles per day (2023 count), of which roughly 13% are trucks.

How long is SR 14 over Bn RR?

The structure is 382 ft (116.4 m) long with a longest span of 106 ft (32.3 m) and a deck 43 ft wide.

Who owns SR 14 over Bn RR?

It is owned by the State Highway Agency.