US Bridges

Road over North Fork Clackamas Ri*

PoorClosed to traffic

Clackamas County, Oregon · S-17 T-4S R-6E Wm · Structure no. 060605000001605

Built
1982
43 years old
Condition
Poor
inspected July 2024
Type
Stringer/Multi-beam or Girder
Wood or Timber
Length
37 ft
1 main span
Daily traffic
2
2018 count
Owner
Federal
U.S. Forest Service

About this bridge

Road over North Fork Clackamas Ri* is a wood or timber stringer/multi-beam or girder carrying Road over North Fork Clackamas Ri* in Clackamas County, Oregon. It was built in 1982, so it is 43 years old, younger 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. Its operating status is: closed to all traffic.

It carries about 2 vehicles a day, projected to reach 3 by 2045. The structure is 37 ft (11.3 m) long and 15 ft wide. If it were closed, the detour would be 98.2 mi (158 km).

CarriesRoad
CrossesNorth Fork Clackamas Ri*
LocationS-17 T-4S R-6E Wm
RouteFederal Lands Road 46101
StateOregon
Coordinates45.2228, -122.0887
Functional classRural Local

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
Deck5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure4 PoorAdvanced section loss, deterioration, spalling or scour.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionJuly 2024
Inspection intervalevery 24 months
Operating statusClosed to all traffic
ScourFoundations stable; action required to protect exposed foundations
Structural evaluation*: *
Deck geometry6: Equal to present minimum criteria
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating—
Inventory rating—

Structure

MaterialWood or Timber
DeckOther
Main spans1
Design loadUnknown
Structure length37 ft (11.3 m)
Longest span31 ft (9.3 m)
Deck width15 ft (4.5 m)
Roadway width15 ft (4.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic2 (2018)
Projected traffic3 by 2045
Trucks—
Lanes on structure1
Traffic directionOne-lane bridge for two-way traffic
CarriesHighway
CrossesWaterway
Detour if closed98.2 mi (158 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerU.S. Forest Service
Maintained byU.S. Forest Service
Historic statusHistorical significance not determinable at this time
Work proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was Road over North Fork Clackamas Ri* built?

It was built in 1982, making it 43 years old in 2025.

What condition is Road over North Fork Clackamas Ri* 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 July 2024.

How much traffic does Road over North Fork Clackamas Ri* carry?

About 2 vehicles per day (2018 count).

How long is Road over North Fork Clackamas Ri*?

The structure is 37 ft (11.3 m) long with a longest span of 31 ft (9.3 m) and a deck 15 ft wide.

Who owns Road over North Fork Clackamas Ri*?

It is owned by the U.S. Forest Service.