US Bridges

US 97 over Drain Canal

Good

Kittitas County, Washington · 1.8 N JCT I-90 · Structure no. 0001367C0000000

Built
1930
95 years old
Condition
Good
inspected February 2023
Type
Slab
Concrete Continuous
Length
33 ft
2 main spans
Daily traffic
4,571
2023 count
Owner
State
State Highway Agency

About this bridge

US 97 over Drain Canal is a concrete continuous slab carrying US 97 over Drain Canal in Kittitas County, Washington. It was built in 1930, so it is 95 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 4,571 vehicles a day, roughly 17% of them trucks, projected to reach 5,463 by 2039. The structure is 33 ft (10.1 m) long and 31 ft wide. If it were closed, the detour would be 3.7 mi (6 km).

CarriesUS 97
CrossesDrain Canal
Location1.8 N JCT I-90
RouteU.S. Route 97
Coordinates47.02541, -120.59751
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
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
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 evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry3: Basically intolerable, requiring high priority of corrective action
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating31.1 US tons
Inventory rating23.9 US tons

Structure

Structure typeSlab
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans2
Design loadH 15
Structure length33 ft (10.1 m)
Longest span15 ft (4.7 m)
Deck width31 ft (9.3 m)
Roadway width27 ft (8.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic4,571 (2023)
Projected traffic5,463 by 2039
Trucks17%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.7 mi (6 km)
TollOn a free road
National Highway SystemYes

Ownership and planned work

OwnerState Highway Agency
Maintained byState Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedRehabilitation because of general structure deterioration or inadequate strength
Estimated improvement cost$517,000 (2022 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was US 97 over Drain Canal built?

It was built in 1930, making it 95 years old in 2025.

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

About 4,571 vehicles per day (2023 count), of which roughly 17% are trucks.

How long is US 97 over Drain Canal?

The structure is 33 ft (10.1 m) long with a longest span of 15 ft (4.7 m) and a deck 31 ft wide.

Who owns US 97 over Drain Canal?

It is owned by the State Highway Agency.