US Bridges

Nine Canyon Road over Cid Canal

Good

Benton County, Washington · 0.28 MI N of Erickson RD · Structure no. 086727000000000

Built
1970
55 years old
Condition
Good
inspected March 2023
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
22 ft
1 main span
Daily traffic
604
2018 count
Owner
County
County Highway Agency

About this bridge

Nine Canyon Road over Cid Canal is a prestressed concrete stringer/multi-beam or girder carrying Nine Canyon Road over Cid Canal in Benton County, Washington. It was built in 1970, so it is 55 years old, older 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 7 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 604 vehicles a day, roughly 50% of them trucks, projected to reach 1,000 by 2040. The structure is 22 ft (6.7 m) long and 28 ft wide. If it were closed, the detour would be 16.2 mi (26 km).

Location

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CarriesNine Canyon Road
CrossesCid Canal
Location0.28 MI N of Erickson RD
RouteCounty Highway 48910
CountyBenton County
StateWashington
Coordinates46.15074, -119.05493
Functional classUrban Collector

Condition and inspection

Good

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

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionMarch 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating77.8 US tons
Inventory rating46.7 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete
DeckOther
Main spans1
Design loadH 20
Structure length22 ft (6.7 m)
Longest span22 ft (6.7 m)
Deck width28 ft (8.5 m)
Roadway width28 ft (8.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic604 (2018)
Projected traffic1,000 by 2040
Trucks50%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed16.2 mi (26 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCounty Highway Agency
Maintained byCounty Highway Agency
Historic statusHistorical significance not determinable at this time
Work proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was Nine Canyon Road over Cid Canal built?

It was built in 1970, making it 55 years old in 2025.

What condition is Nine Canyon Road 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 March 2023.

How much traffic does Nine Canyon Road over Cid Canal carry?

About 604 vehicles per day (2018 count), of which roughly 50% are trucks.

How long is Nine Canyon Road over Cid Canal?

The structure is 22 ft (6.7 m) long with a longest span of 22 ft (6.7 m) and a deck 28 ft wide.

Who owns Nine Canyon Road over Cid Canal?

It is owned by the County Highway Agency.