US Bridges

Gap Road over Svid Canal

Good

Benton County, Washington · 00.3 S King Tull RD · Structure no. 083495000000000

Built
1976
49 years old
Condition
Good
inspected February 2024
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
34 ft
1 main span
Daily traffic
1,485
2018 count
Owner
County
County Highway Agency

About this bridge

Gap Road over Svid Canal is a prestressed concrete stringer/multi-beam or girder carrying Gap Road over Svid Canal in Benton County, Washington. It was built in 1976, so it is 49 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 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 1,485 vehicles a day, roughly 25% of them trucks, projected to reach 1,500 by 2038. The structure is 34 ft (10.4 m) long and 28 ft wide. If it were closed, the detour would be 3.7 mi (6 km).

CarriesGap Road
CrossesSvid Canal
Location00.3 S King Tull RD
RouteCounty Highway 21090
Coordinates46.239, -119.78948
Functional classRural Major 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 protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionFebruary 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating41.4 US tons
Inventory rating24.7 US tons

Structure

MaterialPrestressed Concrete
DeckOther
Main spans1
Design loadHS 20
Structure length34 ft (10.4 m)
Longest span34 ft (10.4 m)
Deck width28 ft (8.5 m)
Roadway width28 ft (8.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,485 (2018)
Projected traffic1,500 by 2038
Trucks25%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.7 mi (6 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 proposedOther structural work, including hydraulic replacements
Estimated improvement cost$355,000 (2022 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was Gap Road over Svid Canal built?

It was built in 1976, making it 49 years old in 2025.

What condition is Gap Road over Svid 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 February 2024.

How much traffic does Gap Road over Svid Canal carry?

About 1,485 vehicles per day (2018 count), of which roughly 25% are trucks.

How long is Gap Road over Svid Canal?

The structure is 34 ft (10.4 m) long with a longest span of 34 ft (10.4 m) and a deck 28 ft wide.

Who owns Gap Road over Svid Canal?

It is owned by the County Highway Agency.