US Bridges

Or 51 (hwy 193) over Ash Creek

Fair

Polk County, Oregon · Independence · Structure no. 04599A193 00618

Built
1981
44 years old
Condition
Fair
inspected June 2024
Type
Slab
Prestressed Concrete
Length
122 ft
3 main spans
Daily traffic
7,883
2022 count
Owner
State
State Highway Agency

About this bridge

Or 51 (hwy 193) over Ash Creek is a prestressed concrete slab carrying Or 51 (hwy 193) over Ash Creek in Polk County, Oregon. It was built in 1981, so it is 44 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 7,883 vehicles a day, roughly 7% of them trucks, projected to reach 8,300 by 2042. The structure is 122 ft (37.2 m) long and 52 ft wide.

CarriesOr 51 (hwy 193)
CrossesAsh Creek
LocationIndependence
RouteState Highway 51
StateOregon
Coordinates44.85354, -123.18458
Functional classUrban Other Principal Arterial

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.
Substructure7 GoodSome minor problems.
Channel and channel protection7 GoodSome minor problems.
Last inspectionJune 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourScour critical; foundations unstable for calculated scour conditions
Structural evaluation6: Equal to present minimum criteria
Deck geometry9: Superior to present desirable criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating74.6 US tons
Inventory rating57.5 US tons

Structure

Structure typeSlab
MaterialPrestressed Concrete
DeckConcrete, precast panels
Main spans3
Design loadHS 20
Structure length122 ft (37.2 m)
Longest span65 ft (19.8 m)
Deck width52 ft (15.8 m)
Roadway width46 ft (14 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic7,883 (2022)
Projected traffic8,300 by 2042
Trucks7%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesWaterway
Detour if closed—
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 proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was Or 51 (hwy 193) over Ash Creek built?

It was built in 1981, making it 44 years old in 2025.

What condition is Or 51 (hwy 193) over Ash 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 2024.

How much traffic does Or 51 (hwy 193) over Ash Creek carry?

About 7,883 vehicles per day (2022 count), of which roughly 7% are trucks.

How long is Or 51 (hwy 193) over Ash Creek?

The structure is 122 ft (37.2 m) long with a longest span of 65 ft (19.8 m) and a deck 52 ft wide.

Who owns Or 51 (hwy 193) over Ash Creek?

It is owned by the State Highway Agency.