US Bridges

SR 503 over East Fork Lewis River

Fair

Clark County, Washington · 2.0 N JCT SR 502 · Structure no. 0008094A0000000

Built
1967
58 years old
Condition
Fair
inspected July 2023
Type
Box Beam or Girders - Multiple
Concrete Continuous
Length
260 ft
3 main spans
Daily traffic
18,654
2023 count
Owner
State
State Highway Agency

About this bridge

SR 503 over East Fork Lewis River is a concrete continuous box beam or girders - multiple carrying SR 503 over East Fork Lewis River in Clark County, Washington. It was built in 1967, so it is 58 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 18,654 vehicles a day, roughly 8% of them trucks, projected to reach 24,556 by 2039. The structure is 260 ft (79.2 m) long and 35 ft wide. If it were closed, the detour would be 8.1 mi (13 km).

Location

Open in Google Maps
CarriesSR 503
CrossesEast Fork Lewis River
Location2.0 N JCT SR 502
RouteState Highway 503
CountyClark County
StateWashington
Coordinates45.80954, -122.54719
Functional classUrban Minor Arterial

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.
Superstructure7 GoodSome minor problems.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection7 GoodSome minor problems.
Last inspectionJuly 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
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 rating84 US tons
Inventory rating48.9 US tons

Structure

Structure typeBox Beam or Girders - Multiple
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length260 ft (79.2 m)
Longest span99 ft (30.2 m)
Deck width35 ft (10.6 m)
Roadway width28 ft (8.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic18,654 (2023)
Projected traffic24,556 by 2039
Trucks8%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesWaterway
Detour if closed8.1 mi (13 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$6.7 million (2022 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was SR 503 over East Fork Lewis River built?

It was built in 1967, making it 58 years old in 2025.

What condition is SR 503 over East Fork Lewis River 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 503 over East Fork Lewis River carry?

About 18,654 vehicles per day (2023 count), of which roughly 8% are trucks.

How long is SR 503 over East Fork Lewis River?

The structure is 260 ft (79.2 m) long with a longest span of 99 ft (30.2 m) and a deck 35 ft wide.

Who owns SR 503 over East Fork Lewis River?

It is owned by the State Highway Agency.