US Bridges

I-5 (hwy 001) Con over Yoncalla JCT

Fair

Douglas County, Oregon · 02.5 MI S Yoncalla · Structure no. 07642 236 00783

Built
1954
71 years old
Condition
Fair
inspected February 2023
Type
Tee Beam
Concrete Continuous
Length
162 ft
4 main spans
Daily traffic
1,628
2022 count
Owner
State
State Highway Agency

About this bridge

I-5 (hwy 001) Con over Yoncalla JCT is a concrete continuous tee beam carrying I-5 (hwy 001) Con over Yoncalla JCT in Douglas County, Oregon. It was built in 1954, so it is 71 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 1,628 vehicles a day, roughly 11% of them trucks, projected to reach 2,400 by 2030. The structure is 162 ft (49.4 m) long and 31 ft wide. If it were closed, the detour would be 18.6 mi (30 km).

Location

Open in Google Maps
CarriesI-5 (hwy 001) Con
CrossesYoncalla JCT
Location02.5 MI S Yoncalla
RouteInterstate 5
CountyDouglas County
StateOregon
Coordinates43.56345, -123.27996
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
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionFebruary 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation6: Equal to present minimum criteria
Deck geometry2: Basically intolerable, requiring high priority of replacement
Approach roadway alignment8: Equal to present desirable criteria
Operating rating34.3 US tons
Inventory rating26.5 US tons

Structure

Structure typeTee Beam
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans4
Design loadHS 20
Structure length162 ft (49.4 m)
Longest span49 ft (14.9 m)
Deck width31 ft (9.3 m)
Roadway width26 ft (7.9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,628 (2022)
Projected traffic2,400 by 2030
Trucks11%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesHighway
Detour if closed18.6 mi (30 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerState Highway Agency
Maintained byState Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedWidening of existing bridge without deck rehabilitation
Estimated improvement cost$837,000
NavigationNot applicable (no waterway)

Frequently asked questions

When was I-5 (hwy 001) Con over Yoncalla JCT built?

It was built in 1954, making it 71 years old in 2025.

What condition is I-5 (hwy 001) Con over Yoncalla JCT 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 February 2023.

How much traffic does I-5 (hwy 001) Con over Yoncalla JCT carry?

About 1,628 vehicles per day (2022 count), of which roughly 11% are trucks.

How long is I-5 (hwy 001) Con over Yoncalla JCT?

The structure is 162 ft (49.4 m) long with a longest span of 49 ft (14.9 m) and a deck 31 ft wide.

Who owns I-5 (hwy 001) Con over Yoncalla JCT?

It is owned by the State Highway Agency.