US Bridges

Nusom Road over Pudding River

Good

Marion County, Oregon · 02.5 East of N Howell · Structure no. 05379A634 00000

Built
1978
47 years old
Condition
Good
inspected August 2024
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
197 ft
2 main spans
Daily traffic
897
2020 count
Owner
County
County Highway Agency

About this bridge

Nusom Road over Pudding River is a prestressed concrete stringer/multi-beam or girder carrying Nusom Road over Pudding River in Marion County, Oregon. It was built in 1978, so it is 47 years old, younger than the Oregon average of 49.9 years.

The most recent inspection reported to the Federal Highway Administration rates it in good condition with a lowest component rating of 7 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 897 vehicles a day, roughly 5% of them trucks, projected to reach 1,007 by 2025. The structure is 197 ft (60 m) long and 35 ft wide. If it were closed, the detour would be 6.8 mi (11 km).

CarriesNusom Road
CrossesPudding River
Location02.5 East of N Howell
RouteCounty Highway A0585
StateOregon
Coordinates45.03795, -122.83439
Functional classRural Minor Collector

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure8 Very GoodNo problems noted.
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 evaluation7: Better than present minimum criteria
Deck geometry6: Equal to present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating50.4 US tons
Inventory rating38.9 US tons

Structure

MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans2
Design loadHS 20
Structure length197 ft (60 m)
Longest span99 ft (30.2 m)
Deck width35 ft (10.8 m)
Roadway width32 ft (9.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic897 (2020)
Projected traffic1,007 by 2025
Trucks5%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed6.8 mi (11 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 Nusom Road over Pudding River built?

It was built in 1978, making it 47 years old in 2025.

What condition is Nusom Road over Pudding River in?

The National Bridge Inventory rates it in good condition. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted. The last reported inspection was in August 2024.

How much traffic does Nusom Road over Pudding River carry?

About 897 vehicles per day (2020 count), of which roughly 5% are trucks.

How long is Nusom Road over Pudding River?

The structure is 197 ft (60 m) long with a longest span of 99 ft (30.2 m) and a deck 35 ft wide.

Who owns Nusom Road over Pudding River?

It is owned by the County Highway Agency.