US Bridges

SR 397 over BNSF RR

Good

Benton County, Washington · 10.6 N JCT I-82 · Structure no. 002004070000000

Built
2008
17 years old
Condition
Good
inspected July 2022
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
98 ft
1 main span
Daily traffic
1,190
2023 count
Owner
State
State Highway Agency

About this bridge

SR 397 over BNSF RR is a prestressed concrete stringer/multi-beam or girder carrying SR 397 over BNSF RR in Benton County, Washington. It was built in 2008, so it is 17 years old, younger than the Washington average of 49.8 years.

The most recent inspection reported to the Federal Highway Administration rates it in good condition with a lowest component rating of 8 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 1,190 vehicles a day, roughly 10% of them trucks, projected to reach 1,526 by 2039. The structure is 98 ft (29.9 m) long and 43 ft wide. If it were closed, the detour would be 36 mi (58 km).

Location

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CarriesSR 397
CrossesBNSF RR
Location10.6 N JCT I-82
RouteState Highway 397
CountyBenton County
StateWashington
Coordinates46.14086, -119.01439
Functional classUrban Minor Arterial

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Deck8 Very GoodNo problems noted.
Superstructure8 Very GoodNo problems noted.
Substructure8 Very GoodNo problems noted.
Last inspectionJuly 2022
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation8: Equal to present desirable criteria
Deck geometry6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating99 US tons
Inventory rating60 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans1
Design loadHL 93
Structure length98 ft (29.9 m)
Longest span96 ft (29.3 m)
Deck width43 ft (13.1 m)
Roadway width34 ft (10.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,190 (2023)
Projected traffic1,526 by 2039
Trucks10%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesRailroad
Detour if closed36 mi (58 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerState Highway Agency
Maintained byState Highway Agency
Historic statusHistorical significance not determinable at this time
Work proposedRehabilitation because of general structure deterioration or inadequate strength
Estimated improvement cost$1.7 million (2022 estimate)
NavigationNot applicable (no waterway)

Frequently asked questions

When was SR 397 over BNSF RR built?

It was built in 2008, making it 17 years old in 2025.

What condition is SR 397 over BNSF RR in?

The National Bridge Inventory rates it in good condition. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted. The last reported inspection was in July 2022.

How much traffic does SR 397 over BNSF RR carry?

About 1,190 vehicles per day (2023 count), of which roughly 10% are trucks.

How long is SR 397 over BNSF RR?

The structure is 98 ft (29.9 m) long with a longest span of 96 ft (29.3 m) and a deck 43 ft wide.

Who owns SR 397 over BNSF RR?

It is owned by the State Highway Agency.