US Bridges

SR 203 over Cherry Creek

Poor

King County, Washington · 17.3 N JCT SR 202 · Structure no. 0003124C0000000

Built
1946
79 years old
Condition
Poor
inspected May 2024
Type
Tee Beam
Concrete Continuous
Length
101 ft
3 main spans
Daily traffic
10,445
2023 count
Owner
State
State Highway Agency

About this bridge

SR 203 over Cherry Creek is a concrete continuous tee beam carrying SR 203 over Cherry Creek in King County, Washington. It was built in 1946, so it is 79 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 10,445 vehicles a day, roughly 9% of them trucks, projected to reach 14,690 by 2039. The structure is 101 ft (30.8 m) long and 40 ft wide. If it were closed, the detour would be 14.3 mi (23 km).

Location

Open in Google Maps
CarriesSR 203
CrossesCherry Creek
Location17.3 N JCT SR 202
RouteState Highway 203
CountyKing County
StateWashington
Coordinates47.76663, -121.95732
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
Deck4 PoorAdvanced section loss, deterioration, spalling or scour.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionMay 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to 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 rating36.8 US tons
Inventory rating28.2 US tons

Structure

Structure typeTee Beam
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 15
Structure length101 ft (30.8 m)
Longest span56 ft (17.1 m)
Deck width40 ft (12.2 m)
Roadway width36 ft (11 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic10,445 (2023)
Projected traffic14,690 by 2039
Trucks9%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed14.3 mi (23 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$1.4 million (2022 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was SR 203 over Cherry Creek built?

It was built in 1946, making it 79 years old in 2025.

What condition is SR 203 over Cherry 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 May 2024.

How much traffic does SR 203 over Cherry Creek carry?

About 10,445 vehicles per day (2023 count), of which roughly 9% are trucks.

How long is SR 203 over Cherry Creek?

The structure is 101 ft (30.8 m) long with a longest span of 56 ft (17.1 m) and a deck 40 ft wide.

Who owns SR 203 over Cherry Creek?

It is owned by the State Highway Agency.