US Bridges

SR 397 over Cid Canal

Good

Benton County, Washington · 9.8 N JCT I-82 · Structure no. 002004080000000

Built
2008
17 years old
Condition
Good
inspected July 2022
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
44 ft
1 main span
Daily traffic
926
2023 count
Owner
State
State Highway Agency

About this bridge

SR 397 over Cid Canal is a prestressed concrete stringer/multi-beam or girder carrying SR 397 over Cid Canal 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 926 vehicles a day, roughly 16% of them trucks, projected to reach 1,079 by 2039. The structure is 44 ft (13.4 m) long and 44 ft wide. If it were closed, the detour would be 37.9 mi (61 km).

Location

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CarriesSR 397
CrossesCid Canal
Location9.8 N JCT I-82
RouteState Highway 397
CountyBenton County
StateWashington
Coordinates46.13906, -119.02983
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.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionJuly 2022
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation8: Equal to present desirable criteria
Deck geometry6: Equal to present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating63.9 US tons
Inventory rating38 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete
DeckConcrete, precast panels
Main spans1
Design loadHL 93
Structure length44 ft (13.4 m)
Longest span43 ft (13.1 m)
Deck width44 ft (13.4 m)
Roadway width34 ft (10.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic926 (2023)
Projected traffic1,079 by 2039
Trucks16%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesWaterway
Detour if closed37.9 mi (61 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$752,000 (2022 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was SR 397 over Cid Canal built?

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

What condition is SR 397 over Cid Canal 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 Cid Canal carry?

About 926 vehicles per day (2023 count), of which roughly 16% are trucks.

How long is SR 397 over Cid Canal?

The structure is 44 ft (13.4 m) long with a longest span of 43 ft (13.1 m) and a deck 44 ft wide.

Who owns SR 397 over Cid Canal?

It is owned by the State Highway Agency.