US Bridges

SR 20 over Early Winters Creek

Poor

Okanogan County, Washington · 15.2 E Chelan CO · Structure no. 0007567A0000000

Built
1964
61 years old
Condition
Poor
inspected July 2023
Type
Tee Beam
Concrete Continuous
Length
97 ft
3 main spans
Daily traffic
1,280
2023 count
Owner
State
State Highway Agency

About this bridge

SR 20 over Early Winters Creek is a concrete continuous tee beam carrying SR 20 over Early Winters Creek 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 3 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 1,280 vehicles a day, roughly 9% of them trucks, projected to reach 1,592 by 2039. The structure is 97 ft (29.6 m) long and 31 ft wide. If it were closed, the detour would be 98.8 mi (159 km).

Location

Open in Google Maps
CarriesSR 20
CrossesEarly Winters Creek
Location15.2 E Chelan CO
RouteState Highway 20
CountyOkanogan County
StateWashington
Coordinates48.59783, -120.44363
Functional classRural Minor Arterial

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
Deck3 SeriousLoss of section, deterioration, spalling or scour have seriously affected primary structural components.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Channel and channel protection7 GoodSome minor problems.
Last inspectionJuly 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourScour critical; foundations unstable for calculated scour conditions
Structural evaluation7: Better than present minimum criteria
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating77.9 US tons
Inventory rating46 US tons

Structure

Structure typeTee Beam
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length97 ft (29.6 m)
Longest span58 ft (17.6 m)
Deck width31 ft (9.3 m)
Roadway width26 ft (7.9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,280 (2023)
Projected traffic1,592 by 2039
Trucks9%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed98.8 mi (159 km)
TollOn a free road
National Highway SystemNo

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$1.8 million (2022 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was SR 20 over Early Winters Creek built?

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

What condition is SR 20 over Early Winters Creek 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 SR 20 over Early Winters Creek carry?

About 1,280 vehicles per day (2023 count), of which roughly 9% are trucks.

How long is SR 20 over Early Winters Creek?

The structure is 97 ft (29.6 m) long with a longest span of 58 ft (17.6 m) and a deck 31 ft wide.

Who owns SR 20 over Early Winters Creek?

It is owned by the State Highway Agency.