US Bridges

County RD 83G over Canyon Cr./Schoolland CR

Good

Coos County, Oregon · 0575 South JCT RD 20 AN83 · Structure no. 11C72U008300575

Built
1978
47 years old
Condition
Good
inspected September 2024
Type
Slab
Prestressed Concrete
Length
40 ft
1 main span
Daily traffic
35
2020 count
Owner
County
County Highway Agency

About this bridge

County RD 83G over Canyon Cr./Schoolland CR is a prestressed concrete slab carrying County RD 83G over Canyon Cr./Schoolland CR in Coos County, Oregon. It was built in 1978, so it is 47 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 35 vehicles a day, roughly 1% of them trucks, projected to reach 40 by 2025. The structure is 40 ft (12.2 m) long and 24 ft wide. If it were closed, the detour would be 123.7 mi (199 km).

CarriesCounty RD 83G
CrossesCanyon Cr./Schoolland CR
Location0575 South JCT RD 20 AN83
RouteCounty Highway C083G
StateOregon
Coordinates42.9403, -124.1896
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.
Superstructure7 GoodSome minor problems.
Substructure8 Very GoodNo problems noted.
Channel and channel protection7 GoodSome minor problems.
Last inspectionSeptember 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourUnknown foundation; not evaluated for scour
Structural evaluation7: Better than present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating64.6 US tons
Inventory rating50 US tons

Structure

Structure typeSlab
MaterialPrestressed Concrete
DeckOther
Main spans1
Design loadHS 20
Structure length40 ft (12.2 m)
Longest span38 ft (11.6 m)
Deck width24 ft (7.3 m)
Roadway width24 ft (7.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic35 (2020)
Projected traffic40 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 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 83G over Canyon Cr./Schoolland CR built?

It was built in 1978, making it 47 years old in 2025.

What condition is County RD 83G over Canyon Cr./Schoolland CR 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 83G over Canyon Cr./Schoolland CR carry?

About 35 vehicles per day (2020 count), of which roughly 1% are trucks.

How long is County RD 83G over Canyon Cr./Schoolland CR?

The structure is 40 ft (12.2 m) long with a longest span of 38 ft (11.6 m) and a deck 24 ft wide.

Who owns County RD 83G over Canyon Cr./Schoolland CR?

It is owned by the County Highway Agency.