US Bridges

Obenchain RD #957 over Schoolhouse Creek

Good

Jackson County, Oregon · 0.12 Milepost · Structure no. 29C238095700012

Built
1988
37 years old
Condition
Good
inspected June 2023
Type
Slab
Prestressed Concrete
Length
28 ft
1 main span
Daily traffic
360
2020 count
Owner
County
County Highway Agency

About this bridge

Obenchain RD #957 over Schoolhouse Creek is a prestressed concrete slab carrying Obenchain RD #957 over Schoolhouse Creek in Jackson County, Oregon. It was built in 1988, so it is 37 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 360 vehicles a day, roughly 10% of them trucks, projected to reach 420 by 2025. The structure is 28 ft (8.5 m) long and 24 ft wide. If it were closed, the detour would be 123.7 mi (199 km).

CarriesObenchain RD #957
CrossesSchoolhouse Creek
Location0.12 Milepost
RouteCounty Highway C0957
StateOregon
Coordinates42.46931, -122.70746
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.
Substructure7 GoodSome minor problems.
Channel and channel protection7 GoodSome minor problems.
Last inspectionJune 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; action required to protect exposed foundations
Structural evaluation7: Better than 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 alignment3: Basically intolerable, requiring high priority of corrective action
Operating rating98 US tons
Inventory rating72 US tons

Structure

Structure typeSlab
MaterialPrestressed Concrete
DeckOther
Main spans1
Design loadHS 20
Structure length28 ft (8.5 m)
Longest span26 ft (8 m)
Deck width24 ft (7.3 m)
Roadway width22 ft (6.6 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic360 (2020)
Projected traffic420 by 2025
Trucks10%
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 Obenchain RD #957 over Schoolhouse Creek built?

It was built in 1988, making it 37 years old in 2025.

What condition is Obenchain RD #957 over Schoolhouse Creek 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 June 2023.

How much traffic does Obenchain RD #957 over Schoolhouse Creek carry?

About 360 vehicles per day (2020 count), of which roughly 10% are trucks.

How long is Obenchain RD #957 over Schoolhouse Creek?

The structure is 28 ft (8.5 m) long with a longest span of 26 ft (8 m) and a deck 24 ft wide.

Who owns Obenchain RD #957 over Schoolhouse Creek?

It is owned by the County Highway Agency.