US Bridges

Alder Drive NE over Claggett CR

Fair

Marion County, Oregon · Alder DR NE · Structure no. 23853 000 00000

Built
2003
22 years old
Condition
Fair
inspected August 2024
Type
Slab
Prestressed Concrete
Length
120 ft
2 main spans
Daily traffic
7,569
2020 count
Owner
City
City or Municipal Highway Agency

About this bridge

Alder Drive NE over Claggett CR is a prestressed concrete slab carrying Alder Drive NE over Claggett CR in Marion County, Oregon. It was built in 2003, so it is 22 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 7,569 vehicles a day, roughly 5% of them trucks, projected to reach 9,064 by 2025. The structure is 120 ft (36.6 m) long and 47 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Location

Open in Google Maps
CarriesAlder Drive NE
CrossesClaggett CR
LocationAlder DR NE
RouteCity Street C0000
CountyMarion County
StateOregon
Coordinates44.98397, -123.01397
Functional classUrban Minor 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
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection7 GoodSome minor problems.
Last inspectionAugust 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourUnknown foundation; not evaluated for scour
Structural evaluation6: Equal to present minimum criteria
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating89.3 US tons
Inventory rating68.9 US tons

Structure

Structure typeSlab
MaterialPrestressed Concrete
DeckConcrete, precast panels
Main spans2
Design loadHL 93
Structure length120 ft (36.6 m)
Longest span60 ft (18.3 m)
Deck width47 ft (14.3 m)
Roadway width34 ft (10.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic7,569 (2020)
Projected traffic9,064 by 2025
Trucks5%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesWaterway
Detour if closed1.9 mi (3 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCity or Municipal Highway Agency
Maintained byCity or Municipal 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 Alder Drive NE over Claggett CR built?

It was built in 2003, making it 22 years old in 2025.

What condition is Alder Drive NE over Claggett CR 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 Alder Drive NE over Claggett CR carry?

About 7,569 vehicles per day (2020 count), of which roughly 5% are trucks.

How long is Alder Drive NE over Claggett CR?

The structure is 120 ft (36.6 m) long with a longest span of 60 ft (18.3 m) and a deck 47 ft wide.

Who owns Alder Drive NE over Claggett CR?

It is owned by the City or Municipal Highway Agency.