US Bridges

SR 28 over SR 285 S-W Ramp

Fair

Douglas County, Washington · 0.2 W JCT SR 28 SP · Structure no. 0003789A0000000

Built
1950
75 years old
Condition
Fair
inspected July 2023
Type
Slab
Concrete Continuous
Length
130 ft
5 main spans
Daily traffic
6,493
2023 count
Owner
State
State Highway Agency

About this bridge

SR 28 over SR 285 S-W Ramp is a concrete continuous slab carrying SR 28 over SR 285 S-W Ramp in Douglas County, Washington. It was built in 1950, so it is 75 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 6 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 6,493 vehicles a day, roughly 14% of them trucks, projected to reach 7,804 by 2039. The structure is 130 ft (39.6 m) long and 40 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

Open in Google Maps
CarriesSR 28
CrossesSR 285 S-W Ramp
Location0.2 W JCT SR 28 SP
RouteState Highway 28
CountyDouglas County
StateWashington
Coordinates47.41192, -120.29356
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
Deck7 GoodSome minor problems.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure7 GoodSome minor problems.
Last inspectionJuly 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation6: Equal to present minimum criteria
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Approach roadway alignment8: Equal to present desirable criteria
Operating rating97 US tons
Inventory rating58 US tons

Structure

Structure typeSlab
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans5
Design loadHS 20
Structure length130 ft (39.6 m)
Longest span42 ft (12.8 m)
Deck width40 ft (12.3 m)
Roadway width37 ft (11.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic6,493 (2023)
Projected traffic7,804 by 2039
Trucks14%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesHighway
Detour if closed1.2 mi (2 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$2.5 million (2022 estimate)
NavigationNot applicable (no waterway)

Frequently asked questions

When was SR 28 over SR 285 S-W Ramp built?

It was built in 1950, making it 75 years old in 2025.

What condition is SR 28 over SR 285 S-W Ramp 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 July 2023.

How much traffic does SR 28 over SR 285 S-W Ramp carry?

About 6,493 vehicles per day (2023 count), of which roughly 14% are trucks.

How long is SR 28 over SR 285 S-W Ramp?

The structure is 130 ft (39.6 m) long with a longest span of 42 ft (12.8 m) and a deck 40 ft wide.

Who owns SR 28 over SR 285 S-W Ramp?

It is owned by the State Highway Agency.