US Bridges

County Road 112 over East Fork Coquille River

Good

Douglas County, Oregon · 10.2 MI NW of Tenmile Po · Structure no. 19315 112 00547

Built
2005
20 years old
Condition
Good
inspected July 2023
Type
Slab
Prestressed Concrete
Length
37 ft
1 main span
Daily traffic
123
2020 count
Owner
County
County Highway Agency

About this bridge

County Road 112 over East Fork Coquille River is a prestressed concrete slab carrying County Road 112 over East Fork Coquille River in Douglas County, Oregon. It was built in 2005, so it is 20 years old, younger than the Oregon average of 49.9 years.

The most recent inspection reported to the Federal Highway Administration rates it in good condition with a lowest component rating of 7 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 123 vehicles a day, roughly 10% of them trucks, projected to reach 138 by 2025. The structure is 37 ft (11.4 m) long and 24 ft wide. If it were closed, the detour would be 75.2 mi (121 km).

CarriesCounty Road 112
CrossesEast Fork Coquille River
Location10.2 MI NW of Tenmile Po
RouteCounty Highway 0A396
StateOregon
Coordinates43.13259, -123.69301
Functional classRural Major Collector

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure8 Very GoodNo problems noted.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionJuly 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourScour critical; foundations unstable for calculated scour conditions
Structural evaluation7: Better than present minimum criteria
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 rating74.6 US tons
Inventory rating57.5 US tons

Structure

Structure typeSlab
MaterialPrestressed Concrete
DeckOther
Main spans1
Design loadHL 93
Structure length37 ft (11.4 m)
Longest span37 ft (11.4 m)
Deck width24 ft (7.3 m)
Roadway width24 ft (7.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic123 (2020)
Projected traffic138 by 2025
Trucks10%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed75.2 mi (121 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 County Road 112 over East Fork Coquille River built?

It was built in 2005, making it 20 years old in 2025.

What condition is County Road 112 over East Fork Coquille River in?

The National Bridge Inventory rates it in good condition. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted. The last reported inspection was in July 2023.

How much traffic does County Road 112 over East Fork Coquille River carry?

About 123 vehicles per day (2020 count), of which roughly 10% are trucks.

How long is County Road 112 over East Fork Coquille River?

The structure is 37 ft (11.4 m) long with a longest span of 37 ft (11.4 m) and a deck 24 ft wide.

Who owns County Road 112 over East Fork Coquille River?

It is owned by the County Highway Agency.