US Bridges

I-5 (hwy 001) Con over Yoncalla Creek

Good

Douglas County, Oregon · 077 MI S Drain · Structure no. 07641 236 00768

Built
1954
71 years old
Condition
Good
inspected November 2024
Type
Tee Beam
Concrete Continuous
Length
56 ft
3 main spans
Daily traffic
800
2022 count
Owner
State
State Highway Agency

About this bridge

I-5 (hwy 001) Con over Yoncalla Creek is a concrete continuous tee beam carrying I-5 (hwy 001) Con over Yoncalla Creek 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 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 800 vehicles a day, roughly 25% of them trucks, projected to reach 950 by 2030. The structure is 56 ft (17.1 m) long and 34 ft wide. If it were closed, the detour would be 18.6 mi (30 km).

Location

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CarriesI-5 (hwy 001) Con
CrossesYoncalla Creek
Location077 MI S Drain
RouteInterstate 5
CountyDouglas County
StateOregon
Coordinates43.56536, -123.28095
Functional classRural Major Collector

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Deck8 Very GoodNo problems noted.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Channel and channel protection7 GoodSome minor problems.
Last inspectionNovember 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation6: Equal to present minimum criteria
Deck geometry2: Basically intolerable, requiring high priority of replacement
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating37.5 US tons
Inventory rating28.9 US tons

Structure

Structure typeTee Beam
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length56 ft (17.1 m)
Longest span38 ft (11.6 m)
Deck width34 ft (10.3 m)
Roadway width26 ft (7.9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic800 (2022)
Projected traffic950 by 2030
Trucks25%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
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$287,000
NavigationNo navigation control on waterway

Frequently asked questions

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

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

What condition is I-5 (hwy 001) Con over Yoncalla 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 November 2024.

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

About 800 vehicles per day (2022 count), of which roughly 25% are trucks.

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

The structure is 56 ft (17.1 m) long with a longest span of 38 ft (11.6 m) and a deck 34 ft wide.

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

It is owned by the State Highway Agency.