US Bridges

Larsen Ranch Rd. over Shutter Creek

Fair

Coos County, Oregon · 0.0 · Structure no. 21060 000 00000

Built
2008
17 years old
Condition
Fair
inspected September 2024
Type
Slab
Prestressed Concrete
Length
28 ft
1 main span
Daily traffic
14
2020 count
Owner
County
County Highway Agency

About this bridge

Larsen Ranch Rd. over Shutter Creek is a prestressed concrete slab carrying Larsen Ranch Rd. over Shutter Creek in Coos County, Oregon. It was built in 2008, so it is 17 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 14 vehicles a day, roughly 1% of them trucks, projected to reach 14 by 2025. The structure is 28 ft (8.5 m) long and 21 ft wide. If it were closed, the detour would be 123.7 mi (199 km).

Location

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CarriesLarsen Ranch Rd.
CrossesShutter Creek
Location0.0
RouteCounty Highway 0
CountyCoos County
StateOregon
Coordinates43.53822, -124.15494
Functional classRural Minor Arterial

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.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure8 Very GoodNo problems noted.
Channel and channel protection7 GoodSome minor problems.
Last inspectionSeptember 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourScour critical; foundations unstable for calculated scour conditions
Structural evaluation6: Equal to present minimum criteria
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 rating46.4 US tons
Inventory rating35.7 US tons

Structure

Structure typeSlab
MaterialPrestressed Concrete
DeckOther
Main spans1
Design loadOther
Structure length28 ft (8.5 m)
Longest span28 ft (8.4 m)
Deck width21 ft (6.4 m)
Roadway width20 ft (6 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic14 (2020)
Projected traffic14 by 2025
Trucks1%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed123.7 mi (199 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCounty Highway Agency
Maintained byCounty Highway Agency
Historic statusHistorical significance not determinable at this time
Work proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was Larsen Ranch Rd. over Shutter Creek built?

It was built in 2008, making it 17 years old in 2025.

What condition is Larsen Ranch Rd. over Shutter 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 2024.

How much traffic does Larsen Ranch Rd. over Shutter Creek carry?

About 14 vehicles per day (2020 count), of which roughly 1% are trucks.

How long is Larsen Ranch Rd. over Shutter Creek?

The structure is 28 ft (8.5 m) long with a longest span of 28 ft (8.4 m) and a deck 21 ft wide.

Who owns Larsen Ranch Rd. over Shutter Creek?

It is owned by the County Highway Agency.