US Bridges

SR 20 over Abandoned Railroad

Poor

Ferry County, Washington · 5.3 E Okanogan CO · Structure no. 0006425A0000000

Built
1960
65 years old
Condition
Poor
inspected April 2023
Type
Slab
Concrete Continuous
Length
212 ft
4 main spans
Daily traffic
2,660
2023 count
Owner
State
State Highway Agency

About this bridge

SR 20 over Abandoned Railroad is a concrete continuous slab carrying SR 20 over Abandoned Railroad in Ferry County, Washington. It was built in 1960, so it is 65 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 2,660 vehicles a day, roughly 8% of them trucks, projected to reach 3,471 by 2039. The structure is 212 ft (64.6 m) long and 33 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

Open in Google Maps
CarriesSR 20
CrossesAbandoned Railroad
Location5.3 E Okanogan CO
RouteState Highway 20
CountyFerry County
StateWashington
Coordinates48.64121, -118.73557
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.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure7 GoodSome minor problems.
Last inspectionApril 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation6: Equal to present minimum criteria
Deck geometry3: Basically intolerable, requiring high priority of corrective action
Approach roadway alignment6: Equal to present minimum criteria
Operating rating48 US tons
Inventory rating28 US tons

Structure

Structure typeSlab
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans4
Design loadHS 20
Structure length212 ft (64.6 m)
Longest span58 ft (17.7 m)
Deck width33 ft (10.2 m)
Roadway width26 ft (7.9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic2,660 (2023)
Projected traffic3,471 by 2039
Trucks8%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesOther
Detour if closed1.2 mi (2 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$2.8 million (2022 estimate)
NavigationNot applicable (no waterway)

Frequently asked questions

When was SR 20 over Abandoned Railroad built?

It was built in 1960, making it 65 years old in 2025.

What condition is SR 20 over Abandoned Railroad 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 April 2023.

How much traffic does SR 20 over Abandoned Railroad carry?

About 2,660 vehicles per day (2023 count), of which roughly 8% are trucks.

How long is SR 20 over Abandoned Railroad?

The structure is 212 ft (64.6 m) long with a longest span of 58 ft (17.7 m) and a deck 33 ft wide.

Who owns SR 20 over Abandoned Railroad?

It is owned by the State Highway Agency.