US Bridges

11 S 03 E 35.02: over Boulder Creek

Fair

Linn County, Oregon · 20.3 Miles NE of HWY 20 ( · Structure no. 0000000L1439329

Built
1957
68 years old
Condition
Fair
inspected February 2023
Type
Stringer/Multi-beam or Girder
Concrete Continuous
Length
90 ft
3 main spans
Daily traffic
100
2023 count
Owner
Federal
Bureau of Land Management

About this bridge

11 S 03 E 35.02: over Boulder Creek is a concrete continuous stringer/multi-beam or girder carrying 11 S 03 E 35.02: over Boulder Creek in Linn County, Oregon. It was built in 1957, so it is 68 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 100 vehicles a day, roughly 10% of them trucks, projected to reach 150 by 2043. The structure is 90 ft (27.4 m) long and 16 ft wide. If it were closed, the detour would be 31.1 mi (50 km).

Location

Open in Google Maps
Carries11 S 03 E 35.02:
CrossesBoulder Creek
Location20.3 Miles NE of HWY 20 (
RouteFederal Lands Road 0
CountyLinn County
StateOregon
Coordinates44.56833, -122.40111
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
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure7 GoodSome minor problems.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionFebruary 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation6: Equal to present minimum criteria
Deck geometry6: Equal to present minimum criteria
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating36.4 US tons
Inventory rating28.2 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans3 (+2 approach)
Design loadHS 20
Structure length90 ft (27.4 m)
Longest span60 ft (18.3 m)
Deck width16 ft (5 m)
Roadway width14 ft (4.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic100 (2023)
Projected traffic150 by 2043
Trucks10%
Lanes on structure1
Traffic directionOne-lane bridge for two-way traffic
CarriesHighway
CrossesWaterway
Detour if closed31.1 mi (50 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerBureau of Land Management
Maintained byBureau of Land Management
Historic statusHistorical significance not determinable at this time
Work proposedNone recorded
Estimated improvement cost$84,000 (2021 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was 11 S 03 E 35.02: over Boulder Creek built?

It was built in 1957, making it 68 years old in 2025.

What condition is 11 S 03 E 35.02: over Boulder Creek 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 February 2023.

How much traffic does 11 S 03 E 35.02: over Boulder Creek carry?

About 100 vehicles per day (2023 count), of which roughly 10% are trucks.

How long is 11 S 03 E 35.02: over Boulder Creek?

The structure is 90 ft (27.4 m) long with a longest span of 60 ft (18.3 m) and a deck 16 ft wide.

Who owns 11 S 03 E 35.02: over Boulder Creek?

It is owned by the Bureau of Land Management.