US Bridges

North Fork RD over Little N. Santiam

Poor

Marion County, Oregon · 07.0 NE of Hwy. 22 · Structure no. 05913A960 00000

Built
1960
65 years old
Condition
Poor
inspected August 2024
Type
Tee Beam
Concrete Continuous
Length
185 ft
3 main spans
Daily traffic
1,124
2020 count
Owner
County
County Highway Agency

About this bridge

North Fork RD over Little N. Santiam is a concrete continuous tee beam carrying North Fork RD over Little N. Santiam in Marion County, Oregon. It was built in 1960, so it is 65 years old, older than the Oregon average of 49.9 years.

The most recent inspection reported to the Federal Highway Administration rates it in poor condition with a lowest component rating of 4 out of 9. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.

It carries about 1,124 vehicles a day, roughly 2% of them trucks, projected to reach 1,264 by 2025. The structure is 185 ft (56.4 m) long and 31 ft wide. If it were closed, the detour would be 3.1 mi (5 km).

Location

Open in Google Maps
CarriesNorth Fork RD
CrossesLittle N. Santiam
Location07.0 NE of Hwy. 22
RouteCounty Highway A0602
CountyMarion County
StateOregon
Coordinates44.79333, -122.49247
Functional classRural Major Collector

Condition and inspection

Poor

The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.

ComponentRatingMeaning
Deck8 Very GoodNo problems noted.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure4 PoorAdvanced section loss, deterioration, spalling or scour.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionAugust 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; action required to protect exposed foundations
Structural evaluation4: Meets minimum tolerable limits to be left in place as is
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment3: Basically intolerable, requiring high priority of corrective action
Operating rating28.5 US tons
Inventory rating22.2 US tons

Structure

Structure typeTee Beam
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length185 ft (56.4 m)
Longest span70 ft (21.3 m)
Deck width31 ft (9.4 m)
Roadway width27 ft (8.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,124 (2020)
Projected traffic1,264 by 2025
Trucks2%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.1 mi (5 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 North Fork RD over Little N. Santiam built?

It was built in 1960, making it 65 years old in 2025.

What condition is North Fork RD over Little N. Santiam in?

The National Bridge Inventory rates it in poor condition. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions. The last reported inspection was in August 2024.

How much traffic does North Fork RD over Little N. Santiam carry?

About 1,124 vehicles per day (2020 count), of which roughly 2% are trucks.

How long is North Fork RD over Little N. Santiam?

The structure is 185 ft (56.4 m) long with a longest span of 70 ft (21.3 m) and a deck 31 ft wide.

Who owns North Fork RD over Little N. Santiam?

It is owned by the County Highway Agency.