US Bridges

Marquam Road over Butte Creek

Fair

Marion County, Oregon · Co. Line · Structure no. 06208A640 00000

Built
1964
61 years old
Condition
Fair
inspected August 2024
Type
Tee Beam
Concrete Continuous
Length
152 ft
3 main spans
Daily traffic
513
2020 count
Owner
County
County Highway Agency

About this bridge

Marquam Road over Butte Creek is a concrete continuous tee beam carrying Marquam Road over Butte Creek in Marion County, Oregon. It was built in 1964, so it is 61 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 513 vehicles a day, roughly 4% of them trucks, projected to reach 578 by 2025. The structure is 152 ft (46.3 m) long and 31 ft wide. If it were closed, the detour would be 8.1 mi (13 km).

Location

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CarriesMarquam Road
CrossesButte Creek
LocationCo. Line
RouteCounty Highway A0591
CountyMarion County
StateOregon
Coordinates45.07117, -122.71753
Functional classRural Major 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
Deck8 Very GoodNo problems noted.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure7 GoodSome minor problems.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionAugust 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 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 rating44.3 US tons
Inventory rating34.3 US tons

Structure

Structure typeTee Beam
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length152 ft (46.3 m)
Longest span70 ft (21.3 m)
Deck width31 ft (9.4 m)
Roadway width26 ft (8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic513 (2020)
Projected traffic578 by 2025
Trucks4%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed8.1 mi (13 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCounty Highway Agency
Maintained byCounty Highway Agency
Historic statusHistorical significance not determinable at this time
Work proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was Marquam Road over Butte Creek built?

It was built in 1964, making it 61 years old in 2025.

What condition is Marquam Road over Butte 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 2024.

How much traffic does Marquam Road over Butte Creek carry?

About 513 vehicles per day (2020 count), of which roughly 4% are trucks.

How long is Marquam Road over Butte Creek?

The structure is 152 ft (46.3 m) long with a longest span of 70 ft (21.3 m) and a deck 31 ft wide.

Who owns Marquam Road over Butte Creek?

It is owned by the County Highway Agency.