US Bridges

Liberty ST SE over Pringle Creek

Fair

Marion County, Oregon · Between Mill & Oak SE · Structure no. 470604072 00557

Built
1928
97 years old
Condition
Fair
inspected August 2023
Type
Tee Beam
Concrete Continuous
Length
309 ft
8 main spans
Daily traffic
21,752
2020 count
Owner
City
City or Municipal Highway Agency

About this bridge

Liberty ST SE over Pringle Creek is a concrete continuous tee beam carrying Liberty ST SE over Pringle Creek in Marion County, Oregon. It was built in 1928, so it is 97 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 21,752 vehicles a day, roughly 10% of them trucks, projected to reach 22,502 by 2025. The structure is 309 ft (94.2 m) long and 99 ft wide.

Location

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CarriesLiberty ST SE
CrossesPringle Creek
LocationBetween Mill & Oak SE
RouteCity Street C0000
CountyMarion County
StateOregon
Coordinates44.9367, -123.04049
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.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionAugust 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourScour critical; foundations unstable for calculated scour conditions
Structural evaluation3: Basically intolerable, requiring high priority of corrective action
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating14.7 US tons
Inventory rating11 US tons

Structure

Structure typeTee Beam
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans8
Design loadHS 20
Structure length309 ft (94.2 m)
Longest span48 ft (14.6 m)
Deck width99 ft (30.2 m)
Roadway width59 ft (18 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic21,752 (2020)
Projected traffic22,502 by 2025
Trucks10%
Lanes on structure4
Traffic directionOne-way traffic
CarriesHighway and pedestrian
CrossesWaterway
Detour if closed—
TollOn a free road
National Highway SystemYes

Ownership and planned work

OwnerCity or Municipal Highway Agency
Maintained byCity or Municipal Highway Agency
Historic statusEligible for the National Register of Historic Places
Work proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was Liberty ST SE over Pringle Creek built?

It was built in 1928, making it 97 years old in 2025.

What condition is Liberty ST SE over Pringle 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 August 2023.

How much traffic does Liberty ST SE over Pringle Creek carry?

About 21,752 vehicles per day (2020 count), of which roughly 10% are trucks.

How long is Liberty ST SE over Pringle Creek?

The structure is 309 ft (94.2 m) long with a longest span of 48 ft (14.6 m) and a deck 99 ft wide.

Who owns Liberty ST SE over Pringle Creek?

It is owned by the City or Municipal Highway Agency.