US Bridges

County RD 112G over East Fork Coquille River

Good

Coos County, Oregon · 0002 Miles South CO RD#1C · Structure no. 16831 011200025

Built
1989
36 years old
Condition
Good
inspected September 2024
Type
Tee Beam
Prestressed Concrete
Length
96 ft
1 main span
Daily traffic
15
2020 count
Owner
County
County Highway Agency

About this bridge

County RD 112G over East Fork Coquille River is a prestressed concrete tee beam carrying County RD 112G over East Fork Coquille River in Coos County, Oregon. It was built in 1989, so it is 36 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 15 vehicles a day, roughly 1% of them trucks, projected to reach 15 by 2025. The structure is 96 ft (29.3 m) long and 18 ft wide. If it were closed, the detour would be 3.1 mi (5 km).

CarriesCounty RD 112G
CrossesEast Fork Coquille River
Location0002 Miles South CO RD#1C
RouteCounty Highway C112G
StateOregon
Coordinates43.14314, -123.86619
Functional classRural Local

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.
Superstructure8 Very GoodNo problems noted.
Substructure7 GoodSome minor problems.
Channel and channel protection4 PoorAdvanced section loss, deterioration, spalling or scour.
Last inspectionSeptember 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating25.4 US tons
Inventory rating19.6 US tons

Structure

Structure typeTee Beam
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans1
Design loadUnknown
Structure length96 ft (29.3 m)
Longest span94 ft (28.7 m)
Deck width18 ft (5.6 m)
Roadway width18 ft (5.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic15 (2020)
Projected traffic15 by 2025
Trucks1%
Lanes on structure2
Traffic directionOne-lane bridge for two-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.1 mi (5 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 County RD 112G over East Fork Coquille River built?

It was built in 1989, making it 36 years old in 2025.

What condition is County RD 112G 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 September 2024.

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

About 15 vehicles per day (2020 count), of which roughly 1% are trucks.

How long is County RD 112G over East Fork Coquille River?

The structure is 96 ft (29.3 m) long with a longest span of 94 ft (28.7 m) and a deck 18 ft wide.

Who owns County RD 112G over East Fork Coquille River?

It is owned by the County Highway Agency.