US Bridges

US101(HWY009)NB over NB Shinglehouse Slough

Fair

Coos County, Oregon · 02.3 MI S HWY 241 JCT · Structure no. 06514A009 24181

Built
1990
35 years old
Condition
Fair
inspected May 2023
Type
Slab
Prestressed Concrete
Length
137 ft
3 main spans
Daily traffic
9,357
2022 count
Owner
State
State Highway Agency

About this bridge

US101(HWY009)NB over NB Shinglehouse Slough is a prestressed concrete slab carrying US101(HWY009)NB over NB Shinglehouse Slough in Coos County, Oregon. It was built in 1990, so it is 35 years old, younger 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 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 9,357 vehicles a day, roughly 7% of them trucks, projected to reach 9,400 by 2042. The structure is 137 ft (41.8 m) long and 40 ft wide. If it were closed, the detour would be 25.5 mi (41 km).

Location

Open in Google Maps
CarriesUS101(HWY009)NB
CrossesNB Shinglehouse Slough
Location02.3 MI S HWY 241 JCT
RouteU.S. Route 101
CountyCoos County
StateOregon
Coordinates43.32586, -124.2057
Functional classRural Principal Arterial - Other

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 protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionMay 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; action required to protect exposed foundations
Structural evaluation6: Equal to present minimum criteria
Deck geometry6: Equal to present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating63.6 US tons
Inventory rating48.9 US tons

Structure

Structure typeSlab
MaterialPrestressed Concrete
DeckConcrete, precast panels
Main spans3
Design loadHS 25 or greater
Structure length137 ft (41.8 m)
Longest span46 ft (14 m)
Deck width40 ft (12.2 m)
Roadway width36 ft (11 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic9,357 (2022)
Projected traffic9,400 by 2042
Trucks7%
Lanes on structure2
Traffic directionOne-way traffic
CarriesHighway
CrossesWaterway
Detour if closed25.5 mi (41 km)
TollOn a free road
National Highway SystemYes
Strategic Highway NetworkNon-Interstate STRAHNET route

Ownership and planned work

OwnerState Highway Agency
Maintained byState Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedNone recorded
Estimated improvement cost—
NavigationNavigation control on waterway (bridge permit required)

Frequently asked questions

When was US101(HWY009)NB over NB Shinglehouse Slough built?

It was built in 1990, making it 35 years old in 2025.

What condition is US101(HWY009)NB over NB Shinglehouse Slough 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 May 2023.

How much traffic does US101(HWY009)NB over NB Shinglehouse Slough carry?

About 9,357 vehicles per day (2022 count), of which roughly 7% are trucks.

How long is US101(HWY009)NB over NB Shinglehouse Slough?

The structure is 137 ft (41.8 m) long with a longest span of 46 ft (14 m) and a deck 40 ft wide.

Who owns US101(HWY009)NB over NB Shinglehouse Slough?

It is owned by the State Highway Agency.