US Bridges

US 97 over Town Canal

Good

Kittitas County, Washington · 0.4 N JCT SR 10 · Structure no. 002003710000000

Built
1970
55 years old
Condition
Good
inspected February 2024
Type
Culvert
Concrete
Length
27 ft
2 main spans
Daily traffic
2,702
2023 count
Owner
State
State Highway Agency

About this bridge

US 97 over Town Canal is a concrete culvert carrying US 97 over Town Canal in Kittitas 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 2,702 vehicles a day, roughly 19% of them trucks, projected to reach 3,316 by 2039. The structure is 27 ft (8.2 m) long. If it were closed, the detour would be 39.8 mi (64 km).

CarriesUS 97
CrossesTown Canal
Location0.4 N JCT SR 10
RouteU.S. Route 97
Coordinates47.04037, -120.60844
Functional classRural Principal Arterial - Other

Condition and inspection

Good

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

ComponentRatingMeaning
Channel and channel protection8 Very GoodNo problems noted.
Culvert7 GoodSome minor problems.
Last inspectionFebruary 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating60 US tons
Inventory rating36 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckNot applicable
Main spans2
Design loadHS 20
Structure length27 ft (8.2 m)
Longest span13 ft (4 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic2,702 (2023)
Projected traffic3,316 by 2039
Trucks19%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed39.8 mi (64 km)
TollOn a free road
National Highway SystemYes

Ownership and planned work

OwnerState Highway Agency
Maintained byState Highway Agency
Historic statusHistorical significance not determinable at this time
Work proposedRehabilitation because of general structure deterioration or inadequate strength
Estimated improvement cost$513,000 (2022 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was US 97 over Town Canal built?

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

What condition is US 97 over Town 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 US 97 over Town Canal carry?

About 2,702 vehicles per day (2023 count), of which roughly 19% are trucks.

How long is US 97 over Town Canal?

The structure is 27 ft (8.2 m) long with a longest span of 13 ft (4 m).

Who owns US 97 over Town Canal?

It is owned by the State Highway Agency.