US Bridges

Westside Road over Hiline Canal

Fair

Kittitas County, Washington · 00.37 E Fowler CR R · Structure no. 079886000000000

Built
1955
70 years old, rebuilt 1973
Condition
Fair
inspected April 2023
Type
Channel Beam
Prestressed Concrete Continuous
Length
40 ft
1 main span
Daily traffic
984
2020 count
Owner
County
County Highway Agency

About this bridge

Westside Road over Hiline Canal is a prestressed concrete continuous channel beam carrying Westside Road over Hiline Canal in Kittitas County, Washington. It was built in 1955 and reconstructed in 1973, so it is 70 years old, older than the Washington average of 49.8 years.

The most recent inspection reported to the Federal Highway Administration rates it in fair condition with a lowest component rating of 5 out of 9. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

It carries about 984 vehicles a day, roughly 29% of them trucks, projected to reach 2,607 by 2040. The structure is 40 ft (12.2 m) long and 30 ft wide. If it were closed, the detour would be 14.3 mi (23 km).

Location

Open in Google Maps
CarriesWestside Road
CrossesHiline Canal
Location00.37 E Fowler CR R
RouteCounty Highway 22710
CountyKittitas County
StateWashington
Coordinates47.17644, -121.05386
Functional classRural Minor Collector

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionApril 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations on dry land well above flood water elevations
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating52.1 US tons
Inventory rating31.1 US tons

Structure

Structure typeChannel Beam
MaterialPrestressed Concrete Continuous
DeckOther
Main spans1
Design loadHS 20
Structure length40 ft (12.2 m)
Longest span40 ft (12.2 m)
Deck width30 ft (9.1 m)
Roadway width28 ft (8.6 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic984 (2020)
Projected traffic2,607 by 2040
Trucks29%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed14.3 mi (23 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 proposedRehabilitation because of general structure deterioration or inadequate strength
Estimated improvement cost$532,000 (2022 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was Westside Road over Hiline Canal built?

It was built in 1955, making it 70 years old in 2025. It was reconstructed in 1973.

What condition is Westside Road over Hiline Canal in?

The National Bridge Inventory rates it in fair condition. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound. The last reported inspection was in April 2023.

How much traffic does Westside Road over Hiline Canal carry?

About 984 vehicles per day (2020 count), of which roughly 29% are trucks.

How long is Westside Road over Hiline Canal?

The structure is 40 ft (12.2 m) long with a longest span of 40 ft (12.2 m) and a deck 30 ft wide.

Who owns Westside Road over Hiline Canal?

It is owned by the County Highway Agency.