US Bridges

County RD 634 over Griffin Cr/So. Stage Rd.

Fair

Jackson County, Oregon · 4.14 Milepost · Structure no. 29C133634 00414

Built
1941
84 years old
Condition
Fair
inspected June 2023
Type
Tee Beam
Concrete
Length
27 ft
1 main span
Daily traffic
5,270
2020 count
Owner
County
County Highway Agency

About this bridge

County RD 634 over Griffin Cr/So. Stage Rd. is a concrete tee beam carrying County RD 634 over Griffin Cr/So. Stage Rd. in Jackson County, Oregon. It was built in 1941, so it is 84 years old, older than the Oregon average of 49.9 years.

The most recent inspection reported to the Federal Highway Administration rates it in fair condition with a lowest component rating of 5 out of 9. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

It carries about 5,270 vehicles a day, roughly 10% of them trucks, projected to reach 6,020 by 2025. The structure is 27 ft (8.1 m) long and 32 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Location

Open in Google Maps
CarriesCounty RD 634
CrossesGriffin Cr/So. Stage Rd.
Location4.14 Milepost
RouteCounty Highway C0634
CountyJackson County
StateOregon
Coordinates42.30125, -122.91475
Functional classUrban Minor Arterial

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Channel and channel protection5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionJune 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourScour critical; foundations unstable for calculated scour conditions
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
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 rating35.7 US tons
Inventory rating27.4 US tons

Structure

Structure typeTee Beam
MaterialConcrete
DeckConcrete, cast-in-place
Main spans1
Design loadH 20
Structure length27 ft (8.1 m)
Longest span27 ft (8.1 m)
Deck width32 ft (9.9 m)
Roadway width32 ft (9.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic5,270 (2020)
Projected traffic6,020 by 2025
Trucks10%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.9 mi (3 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 634 over Griffin Cr/So. Stage Rd. built?

It was built in 1941, making it 84 years old in 2025.

What condition is County RD 634 over Griffin Cr/So. Stage Rd. in?

The National Bridge Inventory rates it in fair condition. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound. The last reported inspection was in June 2023.

How much traffic does County RD 634 over Griffin Cr/So. Stage Rd. carry?

About 5,270 vehicles per day (2020 count), of which roughly 10% are trucks.

How long is County RD 634 over Griffin Cr/So. Stage Rd.?

The structure is 27 ft (8.1 m) long with a longest span of 27 ft (8.1 m) and a deck 32 ft wide.

Who owns County RD 634 over Griffin Cr/So. Stage Rd.?

It is owned by the County Highway Agency.