US Bridges

N Fork Siuslaw RD over Shoemaker Creek

Fair

Lane County, Oregon · 030 MI NE Mapleton · Structure no. 39C534507001792

Built
1975
50 years old
Condition
Fair
inspected September 2023
Type
Slab
Prestressed Concrete
Length
40 ft
2 main spans
Daily traffic
81
2020 count
Owner
County
County Highway Agency

About this bridge

N Fork Siuslaw RD over Shoemaker Creek is a prestressed concrete slab carrying N Fork Siuslaw RD over Shoemaker Creek in Lane County, Oregon. It was built in 1975, so it is 50 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 81 vehicles a day, projected to reach 91 by 2025. The structure is 40 ft (12.2 m) long and 20 ft wide. If it were closed, the detour would be 22.4 mi (36 km).

Location

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CarriesN Fork Siuslaw RD
CrossesShoemaker Creek
Location030 MI NE Mapleton
RouteCounty Highway C5070
CountyLane County
StateOregon
Coordinates44.06632, -123.88114
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
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Channel and channel protection4 PoorAdvanced section loss, deterioration, spalling or scour.
Last inspectionSeptember 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourUnknown foundation; not evaluated for scour
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 adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating98 US tons
Inventory rating44 US tons

Structure

Structure typeSlab
MaterialPrestressed Concrete
DeckOther
Main spans2
Design loadHS 20
Structure length40 ft (12.2 m)
Longest span19 ft (5.8 m)
Deck width20 ft (6.1 m)
Roadway width19 ft (5.9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic81 (2020)
Projected traffic91 by 2025
Trucks0%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed22.4 mi (36 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCounty Highway Agency
Maintained byCounty Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was N Fork Siuslaw RD over Shoemaker Creek built?

It was built in 1975, making it 50 years old in 2025.

What condition is N Fork Siuslaw RD over Shoemaker Creek 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 September 2023.

How much traffic does N Fork Siuslaw RD over Shoemaker Creek carry?

About 81 vehicles per day (2020 count).

How long is N Fork Siuslaw RD over Shoemaker Creek?

The structure is 40 ft (12.2 m) long with a longest span of 19 ft (5.8 m) and a deck 20 ft wide.

Who owns N Fork Siuslaw RD over Shoemaker Creek?

It is owned by the County Highway Agency.