US Bridges

South Loon Lake RD over Railroad

Fair

Stevens County, Washington · 00.28 W JCT SR 395 · Structure no. 081304000000000

Built
1952
73 years old, rebuilt 1994
Condition
Fair
inspected October 2023
Type
Stringer/Multi-beam or Girder
Wood or Timber
Length
96 ft
5 main spans
Daily traffic
349
2024 count
Owner
Railroad
Railroad

About this bridge

South Loon Lake RD over Railroad is a wood or timber stringer/multi-beam or girder carrying South Loon Lake RD over Railroad in Stevens County, Washington. It was built in 1952 and reconstructed in 1994, so it is 73 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 5 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 349 vehicles a day, roughly 5% of them trucks, projected to reach 475 by 2037. The structure is 96 ft (29.3 m) long and 23 ft wide. If it were closed, the detour would be 9.9 mi (16 km).

CarriesSouth Loon Lake RD
CrossesRailroad
Location00.28 W JCT SR 395
RouteCounty Highway 18840
Coordinates48.02813, -117.60467
Functional classRural Minor Collector

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionOctober 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry3: Basically intolerable, requiring high priority of corrective action
Approach roadway alignment3: Basically intolerable, requiring high priority of corrective action
Operating rating36 US tons
Inventory rating25 US tons

Structure

MaterialWood or Timber
DeckCorrugated steel
Main spans5
Design loadHS 20
Structure length96 ft (29.3 m)
Longest span21 ft (6.4 m)
Deck width23 ft (6.9 m)
Roadway width19 ft (5.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic349 (2024)
Projected traffic475 by 2037
Trucks5%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesRailroad
Detour if closed9.9 mi (16 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerRailroad
Maintained byRailroad
Historic statusHistorical significance not determinable at this time
Work proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost$3.8 million (2022 estimate)
NavigationNot applicable (no waterway)

Frequently asked questions

When was South Loon Lake RD over Railroad built?

It was built in 1952, making it 73 years old in 2025. It was reconstructed in 1994.

What condition is South Loon Lake RD over Railroad 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 October 2023.

How much traffic does South Loon Lake RD over Railroad carry?

About 349 vehicles per day (2024 count), of which roughly 5% are trucks.

How long is South Loon Lake RD over Railroad?

The structure is 96 ft (29.3 m) long with a longest span of 21 ft (6.4 m) and a deck 23 ft wide.

Who owns South Loon Lake RD over Railroad?

It is owned by the Railroad.