US Bridges

SR 285 over Wenatchee River & Gnrr

Fair

Chelan County, Washington · 1.5 N JCT SR 285COWENTCH · Structure no. 083731000000000

Built
1954
71 years old
Condition
Fair
inspected September 2024
Type
Girder and Floorbeam System
Steel Continuous
Length
608 ft
3 main spans
Daily traffic
20,059
2023 count
Owner
State
State Highway Agency

About this bridge

SR 285 over Wenatchee River & Gnrr is a steel continuous girder and floorbeam system carrying SR 285 over Wenatchee River & Gnrr in Chelan County, Washington. It was built in 1954, so it is 71 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 20,059 vehicles a day, roughly 4% of them trucks, projected to reach 25,104 by 2039. The structure is 608 ft (185.3 m) long and 37 ft wide. If it were closed, the detour would be 8.1 mi (13 km).

Location

Open in Google Maps
CarriesSR 285
CrossesWenatchee River & Gnrr
Location1.5 N JCT SR 285COWENTCH
RouteState Highway 285
CountyChelan County
StateWashington
Coordinates47.45778, -120.337
Functional classUrban Principal Arterial - Other Freeway or Expressway

Condition and inspection

Fair

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

ComponentRatingMeaning
Deck5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionSeptember 2024
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 rating38 US tons
Inventory rating23 US tons

Structure

Structure typeGirder and Floorbeam System
MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans3 (+2 approach)
Design loadHS 20 + Mod
Structure length608 ft (185.3 m)
Longest span260 ft (79.2 m)
Deck width37 ft (11.3 m)
Roadway width28 ft (8.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic20,059 (2023)
Projected traffic25,104 by 2039
Trucks4%
Lanes on structure2
Traffic directionOne-way traffic
CarriesHighway and pedestrian
CrossesRailroad and waterway
Detour if closed8.1 mi (13 km)
TollOn a free road
National Highway SystemYes

Ownership and planned work

OwnerState Highway Agency
Maintained byState Highway Agency
Historic statusPossibly eligible for the National Register; requires further investigation
Work proposedRehabilitation because of general structure deterioration or inadequate strength
Estimated improvement cost$10.7 million (2022 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was SR 285 over Wenatchee River & Gnrr built?

It was built in 1954, making it 71 years old in 2025.

What condition is SR 285 over Wenatchee River & Gnrr 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 September 2024.

How much traffic does SR 285 over Wenatchee River & Gnrr carry?

About 20,059 vehicles per day (2023 count), of which roughly 4% are trucks.

How long is SR 285 over Wenatchee River & Gnrr?

The structure is 608 ft (185.3 m) long with a longest span of 260 ft (79.2 m) and a deck 37 ft wide.

Who owns SR 285 over Wenatchee River & Gnrr?

It is owned by the State Highway Agency.