US Bridges

Mainline Drive over Claggett Creek

Fair

Marion County, Oregon · .1 MI S of Hyacinth ST NE · Structure no. 16100 072F00173

Built
1984
41 years old
Condition
Fair
inspected August 2023
Type
Slab
Prestressed Concrete
Length
71 ft
1 main span
Daily traffic
1,461
2020 count
Owner
City
City or Municipal Highway Agency

About this bridge

Mainline Drive over Claggett Creek is a prestressed concrete slab carrying Mainline Drive over Claggett Creek in Marion County, Oregon. It was built in 1984, so it is 41 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 1,461 vehicles a day, roughly 5% of them trucks, projected to reach 1,629 by 2025. The structure is 71 ft (21.6 m) long and 32 ft wide. If it were closed, the detour would be 0.6 mi (1 km).

Location

Open in Google Maps
CarriesMainline Drive
CrossesClaggett Creek
Location.1 MI S of Hyacinth ST NE
RouteCity Street 0
CountyMarion County
StateOregon
Coordinates44.98226, -123.00884
Functional classUrban 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.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure7 GoodSome minor problems.
Channel and channel protection7 GoodSome minor problems.
Last inspectionAugust 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
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 rating68.2 US tons
Inventory rating52.5 US tons

Structure

Structure typeSlab
MaterialPrestressed Concrete
DeckConcrete, precast panels
Main spans1
Design loadHS 20
Structure length71 ft (21.6 m)
Longest span70 ft (21.3 m)
Deck width32 ft (9.8 m)
Roadway width31 ft (9.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,461 (2020)
Projected traffic1,629 by 2025
Trucks5%
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

OwnerCity or Municipal Highway Agency
Maintained byCity or Municipal 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 Mainline Drive over Claggett Creek built?

It was built in 1984, making it 41 years old in 2025.

What condition is Mainline Drive over Claggett 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 Mainline Drive over Claggett Creek carry?

About 1,461 vehicles per day (2020 count), of which roughly 5% are trucks.

How long is Mainline Drive over Claggett Creek?

The structure is 71 ft (21.6 m) long with a longest span of 70 ft (21.3 m) and a deck 32 ft wide.

Who owns Mainline Drive over Claggett Creek?

It is owned by the City or Municipal Highway Agency.