US Bridges

Lewis & Clark Spur over Lewis & Clark River

Fair

Clatsop County, Oregon · At Netal Grange · Structure no. 11186A080900002

Built
1958
67 years old
Condition
Fair
inspected April 2023
Type
Stringer/Multi-beam or Girder
Concrete
Length
201 ft
8 main spans
Daily traffic
671
2016 count
Owner
County
County Highway Agency

About this bridge

Lewis & Clark Spur over Lewis & Clark River is a concrete stringer/multi-beam or girder carrying Lewis & Clark Spur over Lewis & Clark River in Clatsop County, Oregon. It was built in 1958, so it is 67 years old, older than the Oregon average of 49.9 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 671 vehicles a day, roughly 10% of them trucks, projected to reach 602 by 2025. The structure is 201 ft (61.3 m) long and 29 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Location

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CarriesLewis & Clark Spur
CrossesLewis & Clark River
LocationAt Netal Grange
RouteCounty Highway A0732
CountyClatsop County
StateOregon
Coordinates46.10323, -123.85365
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.
Superstructure7 GoodSome minor problems.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Channel and channel protection7 GoodSome minor problems.
Last inspectionApril 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourScour critical; foundations unstable for calculated scour conditions
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating50 US tons
Inventory rating38.6 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialConcrete
DeckConcrete, cast-in-place
Main spans8
Design loadUnknown
Structure length201 ft (61.3 m)
Longest span25 ft (7.6 m)
Deck width29 ft (8.7 m)
Roadway width24 ft (7.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic671 (2016)
Projected traffic602 by 2025
Trucks10%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.9 mi (3 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCounty Highway Agency
Maintained byCounty Highway Agency
Historic statusPossibly eligible for the National Register; requires further investigation
Work proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was Lewis & Clark Spur over Lewis & Clark River built?

It was built in 1958, making it 67 years old in 2025.

What condition is Lewis & Clark Spur over Lewis & Clark 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 April 2023.

How much traffic does Lewis & Clark Spur over Lewis & Clark River carry?

About 671 vehicles per day (2016 count), of which roughly 10% are trucks.

How long is Lewis & Clark Spur over Lewis & Clark River?

The structure is 201 ft (61.3 m) long with a longest span of 25 ft (7.6 m) and a deck 29 ft wide.

Who owns Lewis & Clark Spur over Lewis & Clark River?

It is owned by the County Highway Agency.