US Bridges

Engle Road over Truax Creek

Fair

Linn County, Oregon · 0004 MI South HWY 20 · Structure no. 12713 033400004

Built
1958
67 years old, rebuilt 1997
Condition
Fair
inspected June 2023
Type
Slab
Prestressed Concrete
Length
26 ft
1 main span
Daily traffic
464
2021 count
Owner
County
County Highway Agency

About this bridge

Engle Road over Truax Creek is a prestressed concrete slab carrying Engle Road over Truax Creek in Linn County, Oregon. It was built in 1958 and reconstructed in 1997, so it is 67 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 464 vehicles a day, roughly 10% of them trucks, projected to reach 644 by 2041. The structure is 26 ft (7.9 m) long and 32 ft wide. If it were closed, the detour would be 3.1 mi (5 km).

CarriesEngle Road
CrossesTruax Creek
Location0004 MI South HWY 20
RouteCounty Highway C0334
StateOregon
Coordinates44.62892, -122.98788
Functional classRural Local

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 geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating46.1 US tons
Inventory rating35.7 US tons

Structure

Structure typeSlab
MaterialPrestressed Concrete
DeckOther
Main spans1
Design loadH 20
Structure length26 ft (7.9 m)
Longest span23 ft (7 m)
Deck width32 ft (9.9 m)
Roadway width30 ft (9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic464 (2021)
Projected traffic644 by 2041
Trucks10%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.1 mi (5 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 Engle Road over Truax Creek built?

It was built in 1958, making it 67 years old in 2025. It was reconstructed in 1997.

What condition is Engle Road over Truax 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 Engle Road over Truax Creek carry?

About 464 vehicles per day (2021 count), of which roughly 10% are trucks.

How long is Engle Road over Truax Creek?

The structure is 26 ft (7.9 m) long with a longest span of 23 ft (7 m) and a deck 32 ft wide.

Who owns Engle Road over Truax Creek?

It is owned by the County Highway Agency.