US Bridges

County RD 38 over Olalla Creek

Good

Douglas County, Oregon · 6.0 MI S of Porter Creek · Structure no. 22192 038 00497

Built
2015
10 years old
Condition
Good
inspected July 2023
Type
Box Beam or Girders - Multiple
Prestressed Concrete
Length
115 ft
1 main span
Daily traffic
968
2020 count
Owner
County
County Highway Agency

About this bridge

County RD 38 over Olalla Creek is a prestressed concrete box beam or girders - multiple carrying County RD 38 over Olalla Creek in Douglas County, Oregon. It was built in 2015, so it is 10 years old, younger than the Oregon average of 49.9 years.

The most recent inspection reported to the Federal Highway Administration rates it in good condition with a lowest component rating of 7 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 968 vehicles a day, roughly 10% of them trucks, projected to reach 1,093 by 2025. The structure is 115 ft (35.1 m) long and 28 ft wide. If it were closed, the detour would be 123.7 mi (199 km).

Location

Open in Google Maps
CarriesCounty RD 38
CrossesOlalla Creek
Location6.0 MI S of Porter Creek
RouteCounty Highway C0038
CountyDouglas County
StateOregon
Coordinates43.06296, -123.55372
Functional classRural Minor Collector

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Channel and channel protection7 GoodSome minor problems.
Last inspectionJuly 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating61.1 US tons
Inventory rating47.2 US tons

Structure

Structure typeBox Beam or Girders - Multiple
MaterialPrestressed Concrete
DeckConcrete, precast panels
Main spans1
Design loadHL 93
Structure length115 ft (35.1 m)
Longest span115 ft (35.1 m)
Deck width28 ft (8.6 m)
Roadway width28 ft (8.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic968 (2020)
Projected traffic1,093 by 2025
Trucks10%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed123.7 mi (199 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCounty Highway Agency
Maintained byCounty Highway Agency
Historic statusHistorical significance not determinable at this time
Work proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was County RD 38 over Olalla Creek built?

It was built in 2015, making it 10 years old in 2025.

What condition is County RD 38 over Olalla Creek in?

The National Bridge Inventory rates it in good condition. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted. The last reported inspection was in July 2023.

How much traffic does County RD 38 over Olalla Creek carry?

About 968 vehicles per day (2020 count), of which roughly 10% are trucks.

How long is County RD 38 over Olalla Creek?

The structure is 115 ft (35.1 m) long with a longest span of 115 ft (35.1 m) and a deck 28 ft wide.

Who owns County RD 38 over Olalla Creek?

It is owned by the County Highway Agency.