US Bridges

South 5th St. over Oak Creek

Fair

Linn County, Oregon · 004 S CR 713 · Structure no. 12661A071400038

Built
1979
46 years old
Condition
Fair
inspected June 2023
Type
Slab
Prestressed Concrete
Length
45 ft
1 main span
Daily traffic
484
2021 count
Owner
County
County Highway Agency

About this bridge

South 5th St. over Oak Creek is a prestressed concrete slab carrying South 5th St. over Oak Creek in Linn County, Oregon. It was built in 1979, so it is 46 years old, younger 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 484 vehicles a day, roughly 10% of them trucks, projected to reach 670 by 2041. The structure is 45 ft (13.7 m) long and 32 ft wide. If it were closed, the detour would be 3.7 mi (6 km).

CarriesSouth 5th St.
CrossesOak Creek
Location004 S CR 713
RouteCounty Highway C0714
StateOregon
Coordinates44.50664, -122.91409
Functional classUrban 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 inspectionJune 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourUnknown foundation; not evaluated for scour
Structural evaluation6: Equal to present minimum criteria
Deck geometry6: Equal to present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating44.3 US tons
Inventory rating34.3 US tons

Structure

Structure typeSlab
MaterialPrestressed Concrete
DeckOther
Main spans1
Design loadHS 20
Structure length45 ft (13.7 m)
Longest span44 ft (13.4 m)
Deck width32 ft (9.8 m)
Roadway width30 ft (9.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic484 (2021)
Projected traffic670 by 2041
Trucks10%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.7 mi (6 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 proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost$299,000
NavigationNo navigation control on waterway

Frequently asked questions

When was South 5th St. over Oak Creek built?

It was built in 1979, making it 46 years old in 2025.

What condition is South 5th St. over Oak 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 June 2023.

How much traffic does South 5th St. over Oak Creek carry?

About 484 vehicles per day (2021 count), of which roughly 10% are trucks.

How long is South 5th St. over Oak Creek?

The structure is 45 ft (13.7 m) long with a longest span of 44 ft (13.4 m) and a deck 32 ft wide.

Who owns South 5th St. over Oak Creek?

It is owned by the County Highway Agency.