US Bridges

County RD 10A over Calapooya Creek

FairPosted for load

Douglas County, Oregon · 2.0 MI W of Sutherlin · Structure no. 19C487 10 053

Built
1933
92 years old
Condition
Fair
inspected April 2024
Type
Truss - Thru
Wood or Timber
Length
222 ft
1 main span
Daily traffic
588
2020 count
Owner
County
County Highway Agency

About this bridge

County RD 10A over Calapooya Creek is a wood or timber truss - thru carrying County RD 10A over Calapooya Creek in Douglas County, Oregon. It was built in 1933, so it is 92 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 5 out of 9. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound. Its operating status is: posted for load restriction.

It carries about 588 vehicles a day, roughly 1% of them trucks, projected to reach 663 by 2025. The structure is 222 ft (67.7 m) long and 17 ft wide. If it were closed, the detour would be 3.1 mi (5 km).

Location

Open in Google Maps
CarriesCounty RD 10A
CrossesCalapooya Creek
Location2.0 MI W of Sutherlin
RouteCounty Highway C0010
CountyDouglas County
StateOregon
Coordinates43.40188, -123.36303
Functional classRural Minor Collector

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.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionApril 2024
Inspection intervalevery 12 months
Operating statusPosted for load restriction
ScourUnknown foundation; not evaluated for scour
Structural evaluation2: Basically intolerable, requiring high priority of replacement
Deck geometry2: Basically intolerable, requiring high priority of replacement
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating16.1 US tons
Inventory rating12.5 US tons

Structure

Structure typeTruss - Thru
MaterialWood or Timber
DeckWood or timber
Main spans1 (+3 approach)
Design loadH 15
Structure length222 ft (67.7 m)
Longest span80 ft (24.4 m)
Deck width17 ft (5.3 m)
Roadway width16 ft (5 m)
Vertical clearance over deck12 ft (3.7 m)

Traffic and service

Average daily traffic588 (2020)
Projected traffic663 by 2025
Trucks1%
Lanes on structure1
Traffic directionOne-lane bridge for two-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 statusEligible for the National Register of Historic Places
Work proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost$1.3 million
NavigationNo navigation control on waterway

Frequently asked questions

When was County RD 10A over Calapooya Creek built?

It was built in 1933, making it 92 years old in 2025.

What condition is County RD 10A over Calapooya 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 April 2024.

How much traffic does County RD 10A over Calapooya Creek carry?

About 588 vehicles per day (2020 count), of which roughly 1% are trucks.

How long is County RD 10A over Calapooya Creek?

The structure is 222 ft (67.7 m) long with a longest span of 80 ft (24.4 m) and a deck 17 ft wide.

Who owns County RD 10A over Calapooya Creek?

It is owned by the County Highway Agency.