US Bridges

Tennessee RD over Small Creek

Fair

Linn County, Oregon · 011 Miles North HWY 20 · Structure no. 12676 070200105

Built
1966
59 years old
Condition
Fair
inspected June 2023
Type
Slab
Prestressed Concrete
Length
51 ft
1 main span
Daily traffic
360
2021 count
Owner
County
County Highway Agency

About this bridge

Tennessee RD over Small Creek is a prestressed concrete slab carrying Tennessee RD over Small Creek in Linn County, Oregon. It was built in 1966, so it is 59 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 360 vehicles a day, roughly 10% of them trucks, projected to reach 515 by 2041. The structure is 51 ft (15.5 m) long and 24 ft wide. If it were closed, the detour would be 0.6 mi (1 km).

CarriesTennessee RD
CrossesSmall Creek
Location011 Miles North HWY 20
RouteCounty Highway A0491
StateOregon
Coordinates44.55857, -122.89478
Functional classRural Minor 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 protection7 GoodSome minor problems.
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 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 rating33.2 US tons
Inventory rating25.7 US tons

Structure

Structure typeSlab
MaterialPrestressed Concrete
DeckOther
Main spans1
Design loadHS 20
Structure length51 ft (15.5 m)
Longest span49 ft (14.9 m)
Deck width24 ft (7.3 m)
Roadway width22 ft (6.7 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic360 (2021)
Projected traffic515 by 2041
Trucks10%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed0.6 mi (1 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 Tennessee RD over Small Creek built?

It was built in 1966, making it 59 years old in 2025.

What condition is Tennessee RD over Small 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 Tennessee RD over Small Creek carry?

About 360 vehicles per day (2021 count), of which roughly 10% are trucks.

How long is Tennessee RD over Small Creek?

The structure is 51 ft (15.5 m) long with a longest span of 49 ft (14.9 m) and a deck 24 ft wide.

Who owns Tennessee RD over Small Creek?

It is owned by the County Highway Agency.