US Bridges

Road over S Santiam R

PoorPosted for load

Linn County, Oregon · No Data Entered · Structure no. 061803000001519

Built
1953
72 years old
Condition
Poor
inspected October 2024
Type
Stringer/Multi-beam or Girder
Wood or Timber
Length
106 ft
1 main span
Daily traffic
50
Owner
Federal
U.S. Forest Service

About this bridge

Road over S Santiam R is a wood or timber stringer/multi-beam or girder carrying Road over S Santiam R in Linn County, Oregon. It was built in 1953, so it is 72 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 3 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: posted for load restriction.

It carries about 50 vehicles a day, projected to reach 75 by 2045. The structure is 106 ft (32.3 m) long and 20 ft wide. If it were closed, the detour would be 620.7 mi (999 km).

CarriesRoad
CrossesS Santiam R
LocationNo Data Entered
RouteFederal Lands Road 20000
StateOregon
Coordinates44.40406, -122.30249
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
Deck3 SeriousLoss of section, deterioration, spalling or scour have seriously affected primary structural components.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionOctober 2024
Inspection intervalevery 12 months
Operating statusPosted for load restriction
ScourFoundations stable; scour above top of footing
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry6: Equal to present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating32.8 US tons
Inventory rating22.2 US tons

Structure

MaterialWood or Timber
DeckWood or timber
Main spans1 (+2 approach)
Design loadHS 20
Structure length106 ft (32.3 m)
Longest span61 ft (18.5 m)
Deck width20 ft (6 m)
Roadway width14 ft (4.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic50 (—)
Projected traffic75 by 2045
Trucks—
Lanes on structure1
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 S Santiam R built?

It was built in 1953, making it 72 years old in 2025.

What condition is Road over S Santiam R 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 October 2024.

How much traffic does Road over S Santiam R carry?

About 50 vehicles per day (latest count).

How long is Road over S Santiam R?

The structure is 106 ft (32.3 m) long with a longest span of 61 ft (18.5 m) and a deck 20 ft wide.

Who owns Road over S Santiam R?

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