US Bridges

SR 202 over Sammamish R

Good

King County, Washington · 2.5 E JCT SR 522 · Structure no. 0004876A0000000

Built
1955
70 years old
Condition
Good
inspected June 2023
Type
Stringer/Multi-beam or Girder
Prestressed Concrete Continuous
Length
168 ft
5 main spans
Daily traffic
8,961
2023 count
Owner
State
State Highway Agency

About this bridge

SR 202 over Sammamish R is a prestressed concrete continuous stringer/multi-beam or girder carrying SR 202 over Sammamish R in King County, Washington. It was built in 1955, so it is 70 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 8,961 vehicles a day, roughly 3% of them trucks, projected to reach 12,837 by 2039. The structure is 168 ft (51.2 m) long and 32 ft wide. If it were closed, the detour would be 3.7 mi (6 km).

Location

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CarriesSR 202
CrossesSammamish R
Location2.5 E JCT SR 522
RouteState Highway 202
CountyKing County
StateWashington
Coordinates47.73283, -122.14603
Functional classUrban Minor Arterial

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 protection7 GoodSome minor problems.
Last inspectionJune 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourCountermeasures installed to correct a previously existing problem
Structural evaluation4: Meets minimum tolerable limits to be left in place as is
Deck geometry2: Basically intolerable, requiring high priority of replacement
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating37 US tons
Inventory rating20 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete Continuous
DeckConcrete, cast-in-place
Main spans5
Design loadHS 15
Structure length168 ft (51.2 m)
Longest span33 ft (10.1 m)
Deck width32 ft (9.8 m)
Roadway width26 ft (7.9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic8,961 (2023)
Projected traffic12,837 by 2039
Trucks3%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesWaterway
Detour if closed3.7 mi (6 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$2.6 million (2022 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was SR 202 over Sammamish R built?

It was built in 1955, making it 70 years old in 2025.

What condition is SR 202 over Sammamish R 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 June 2023.

How much traffic does SR 202 over Sammamish R carry?

About 8,961 vehicles per day (2023 count), of which roughly 3% are trucks.

How long is SR 202 over Sammamish R?

The structure is 168 ft (51.2 m) long with a longest span of 33 ft (10.1 m) and a deck 32 ft wide.

Who owns SR 202 over Sammamish R?

It is owned by the State Highway Agency.