US Bridges

Knight Hill Rd. over Svid Canal

Good

Yakima County, Washington · 0.24 S of Gilbert Rd. · Structure no. 086491000000000

Built
2000
25 years old
Condition
Good
inspected February 2023
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
103 ft
1 main span
Daily traffic
800
2019 count
Owner
County
County Highway Agency

About this bridge

Knight Hill Rd. over Svid Canal is a prestressed concrete stringer/multi-beam or girder carrying Knight Hill Rd. over Svid Canal in Yakima County, Washington. It was built in 2000, so it is 25 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 800 vehicles a day, roughly 5% of them trucks, projected to reach 1,000 by 2039. The structure is 103 ft (31.4 m) long and 32 ft wide. If it were closed, the detour would be 3.7 mi (6 km).

CarriesKnight Hill Rd.
CrossesSvid Canal
Location0.24 S of Gilbert Rd.
RouteCounty Highway 60510
Coordinates46.44396, -120.32472
Functional classRural Minor 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.
Substructure8 Very GoodNo problems noted.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionFebruary 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation4: Meets minimum tolerable limits to be left in place as is
Deck geometry6: Equal to present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating35.1 US tons
Inventory rating17.9 US tons

Structure

MaterialPrestressed Concrete
DeckOther
Main spans1
Design loadHS 25 or greater
Structure length103 ft (31.4 m)
Longest span101 ft (30.8 m)
Deck width32 ft (9.8 m)
Roadway width31 ft (9.6 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic800 (2019)
Projected traffic1,000 by 2039
Trucks5%
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 proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost$59,000
NavigationNo navigation control on waterway

Frequently asked questions

When was Knight Hill Rd. over Svid Canal built?

It was built in 2000, making it 25 years old in 2025.

What condition is Knight Hill Rd. 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 2023.

How much traffic does Knight Hill Rd. over Svid Canal carry?

About 800 vehicles per day (2019 count), of which roughly 5% are trucks.

How long is Knight Hill Rd. over Svid Canal?

The structure is 103 ft (31.4 m) long with a longest span of 101 ft (30.8 m) and a deck 32 ft wide.

Who owns Knight Hill Rd. over Svid Canal?

It is owned by the County Highway Agency.