US Bridges

Old Highway 99 over Wolf Creek

Fair

Josephine County, Oregon · T33S-R6W-S22DOWNTOWN Wolf · Structure no. 33C37 101000031

Built
1940
85 years old
Condition
Fair
inspected October 2024
Type
Tee Beam
Concrete
Length
41 ft
1 main span
Daily traffic
3,071
2020 count
Owner
County
County Highway Agency

About this bridge

Old Highway 99 over Wolf Creek is a concrete tee beam carrying Old Highway 99 over Wolf Creek in Josephine County, Oregon. It was built in 1940, so it is 85 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 6 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 3,071 vehicles a day, roughly 10% of them trucks, projected to reach 3,586 by 2025. The structure is 41 ft (12.5 m) long and 82 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

CarriesOld Highway 99
CrossesWolf Creek
LocationT33S-R6W-S22DOWNTOWN Wolf
RouteCounty Highway A3380
StateOregon
Coordinates42.6944, -123.3958
Functional classRural Major Collector

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.
Superstructure7 GoodSome minor problems.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionOctober 2024
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 geometry9: Superior to present desirable criteria
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating28.5 US tons
Inventory rating22.2 US tons

Structure

Structure typeTee Beam
MaterialConcrete
DeckConcrete, cast-in-place
Main spans1
Design loadHS 20
Structure length41 ft (12.5 m)
Longest span40 ft (12.2 m)
Deck width82 ft (25 m)
Roadway width78 ft (23.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic3,071 (2020)
Projected traffic3,586 by 2025
Trucks10%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.2 mi (2 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 Old Highway 99 over Wolf Creek built?

It was built in 1940, making it 85 years old in 2025.

What condition is Old Highway 99 over Wolf Creek 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 October 2024.

How much traffic does Old Highway 99 over Wolf Creek carry?

About 3,071 vehicles per day (2020 count), of which roughly 10% are trucks.

How long is Old Highway 99 over Wolf Creek?

The structure is 41 ft (12.5 m) long with a longest span of 40 ft (12.2 m) and a deck 82 ft wide.

Who owns Old Highway 99 over Wolf Creek?

It is owned by the County Highway Agency.