US Bridges

Vantage HWY over Cascade Canal

Good

Kittitas County, Washington · MP 5.25 Vantage HWY · Structure no. 089368000000000

Built
2023
2 years old
Condition
Good
inspected June 2023
Type
Tee Beam
Prestressed Concrete
Length
50 ft
1 main span
Daily traffic
3,979
2023 count
Owner
County
County Highway Agency

About this bridge

Vantage HWY over Cascade Canal is a prestressed concrete tee beam carrying Vantage HWY over Cascade Canal in Kittitas County, Washington. It was built in 2023, so it is 2 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 3,979 vehicles a day, roughly 25% of them trucks, projected to reach 4,177 by 2028. The structure is 50 ft (15.2 m) long and 51 ft wide. If it were closed, the detour would be 3.7 mi (6 km).

Location

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CarriesVantage HWY
CrossesCascade Canal
LocationMP 5.25 Vantage HWY
RouteCounty Highway 0
CountyKittitas County
StateWashington
Coordinates47.00022, -120.43984
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
Deck8 Very GoodNo problems noted.
Superstructure8 Very GoodNo problems noted.
Substructure8 Very GoodNo problems noted.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionJune 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation8: Equal to present desirable criteria
Deck geometry9: Superior to present desirable criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating80 US tons
Inventory rating61.8 US tons

Structure

Structure typeTee Beam
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans1
Design loadHL 93
Structure length50 ft (15.2 m)
Longest span42 ft (12.8 m)
Deck width51 ft (15.5 m)
Roadway width46 ft (13.9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic3,979 (2023)
Projected traffic4,177 by 2028
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 proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost$2.2 million (2022 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was Vantage HWY over Cascade Canal built?

It was built in 2023, making it 2 years old in 2025.

What condition is Vantage HWY over Cascade 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 June 2023.

How much traffic does Vantage HWY over Cascade Canal carry?

About 3,979 vehicles per day (2023 count), of which roughly 25% are trucks.

How long is Vantage HWY over Cascade Canal?

The structure is 50 ft (15.2 m) long with a longest span of 42 ft (12.8 m) and a deck 51 ft wide.

Who owns Vantage HWY over Cascade Canal?

It is owned by the County Highway Agency.