US Bridges

Obenchain RD over Mcneil CR

Good

Jackson County, Oregon · 8.0 Milepost · Structure no. 29C16 957 00800

Built
1990
35 years old
Condition
Good
inspected June 2023
Type
Slab
Prestressed Concrete
Length
29 ft
1 main span
Daily traffic
475
2020 count
Owner
County
County Highway Agency

About this bridge

Obenchain RD over Mcneil CR is a prestressed concrete slab carrying Obenchain RD over Mcneil CR in Jackson County, Oregon. It was built in 1990, so it is 35 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 475 vehicles a day, roughly 10% of them trucks, projected to reach 553 by 2025. The structure is 29 ft (8.8 m) long and 28 ft wide. If it were closed, the detour would be 123.7 mi (199 km).

CarriesObenchain RD
CrossesMcneil CR
Location8.0 Milepost
RouteCounty Highway C0957
StateOregon
Coordinates42.54481, -122.62055
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 protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionJune 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourCountermeasures installed to correct a previously existing problem
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 rating98 US tons
Inventory rating76.7 US tons

Structure

Structure typeSlab
MaterialPrestressed Concrete
DeckOther
Main spans1
Design loadHS 20
Structure length29 ft (8.8 m)
Longest span28 ft (8.5 m)
Deck width28 ft (8.5 m)
Roadway width26 ft (7.9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic475 (2020)
Projected traffic553 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 over Mcneil CR built?

It was built in 1990, making it 35 years old in 2025.

What condition is Obenchain RD over Mcneil 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 June 2023.

How much traffic does Obenchain RD over Mcneil CR carry?

About 475 vehicles per day (2020 count), of which roughly 10% are trucks.

How long is Obenchain RD over Mcneil CR?

The structure is 29 ft (8.8 m) long with a longest span of 28 ft (8.5 m) and a deck 28 ft wide.

Who owns Obenchain RD over Mcneil CR?

It is owned by the County Highway Agency.