US Bridges

Road over South Fork Bull Run Riv*

Fair

Multnomah County, Oregon · S-31 T-1S R-6E Wm · Structure no. 060604000001523

Built
1960
65 years old
Condition
Fair
inspected July 2024
Type
Frame
Concrete Continuous
Length
110 ft
3 main spans
Daily traffic
50
Owner
Federal
U.S. Forest Service

About this bridge

Road over South Fork Bull Run Riv* is a concrete continuous frame carrying Road over South Fork Bull Run Riv* in Multnomah 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 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 50 vehicles a day, projected to reach 75 by 2045. The structure is 110 ft (33.5 m) long and 28 ft wide. If it were closed, the detour would be 620.7 mi (999 km).

Location

Open in Google Maps
CarriesRoad
CrossesSouth Fork Bull Run Riv*
LocationS-31 T-1S R-6E Wm
RouteFederal Lands Road 12000
CountyMultnomah County
StateOregon
Coordinates45.44444, -122.10917
Functional classRural 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 protection8 Very GoodNo problems noted.
Last inspectionJuly 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation6: Equal to present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment3: Basically intolerable, requiring high priority of corrective action
Operating rating46.1 US tons
Inventory rating25 US tons

Structure

Structure typeFrame
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadOther
Structure length110 ft (33.5 m)
Longest span70 ft (21.3 m)
Deck width28 ft (8.5 m)
Roadway width26 ft (7.9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic50 (—)
Projected traffic75 by 2045
Trucks—
Lanes on structure2
Traffic directionOne-lane bridge for two-way traffic
CarriesHighway
CrossesWaterway
Detour if closed620.7 mi (999 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 South Fork Bull Run Riv* built?

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

What condition is Road over South Fork Bull Run Riv* 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 July 2024.

How much traffic does Road over South Fork Bull Run Riv* carry?

About 50 vehicles per day (latest count).

How long is Road over South Fork Bull Run Riv*?

The structure is 110 ft (33.5 m) long with a longest span of 70 ft (21.3 m) and a deck 28 ft wide.

Who owns Road over South Fork Bull Run Riv*?

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