US Bridges

US 97 over SR 155

Poor

Okanogan County, Washington · 0.2 N JCT SR 155 · Structure no. 0007309B0000000

Built
1964
61 years old
Condition
Poor
inspected July 2023
Type
Slab
Concrete
Length
58 ft
1 main span
Daily traffic
8,828
2023 count
Owner
State
State Highway Agency

About this bridge

US 97 over SR 155 is a concrete slab carrying US 97 over SR 155 in Okanogan County, Washington. It was built in 1964, so it is 61 years old, older than the Washington average of 49.8 years.

The most recent inspection reported to the Federal Highway Administration rates it in poor condition with a lowest component rating of 4 out of 9. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.

It carries about 8,828 vehicles a day, roughly 8% of them trucks, projected to reach 10,361 by 2039. The structure is 58 ft (17.7 m) long and 42 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Location

Open in Google Maps
CarriesUS 97
CrossesSR 155
Location0.2 N JCT SR 155
RouteU.S. Route 97
CountyOkanogan County
StateWashington
Coordinates48.40623, -119.5175
Functional classUrban Principal Arterial - Other Freeway or Expressway

Condition and inspection

Poor

The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.

ComponentRatingMeaning
Deck4 PoorAdvanced section loss, deterioration, spalling or scour.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Last inspectionJuly 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation7: Better than present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Approach roadway alignment8: Equal to present desirable criteria
Operating rating55 US tons
Inventory rating33 US tons

Structure

Structure typeSlab
MaterialConcrete
DeckConcrete, cast-in-place
Main spans1
Design loadHS 20
Structure length58 ft (17.7 m)
Longest span54 ft (16.6 m)
Deck width42 ft (12.7 m)
Roadway width38 ft (11.7 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic8,828 (2023)
Projected traffic10,361 by 2039
Trucks8%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesHighway
Detour if closed1.9 mi (3 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$1.2 million (2022 estimate)
NavigationNot applicable (no waterway)

Frequently asked questions

When was US 97 over SR 155 built?

It was built in 1964, making it 61 years old in 2025.

What condition is US 97 over SR 155 in?

The National Bridge Inventory rates it in poor condition. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions. The last reported inspection was in July 2023.

How much traffic does US 97 over SR 155 carry?

About 8,828 vehicles per day (2023 count), of which roughly 8% are trucks.

How long is US 97 over SR 155?

The structure is 58 ft (17.7 m) long with a longest span of 54 ft (16.6 m) and a deck 42 ft wide.

Who owns US 97 over SR 155?

It is owned by the State Highway Agency.