US Bridges

33 S 07 W 02.00: over Riffle Creek

Good

Douglas County, Oregon · 15.8 Miles NW of I-5 (exi · Structure no. 0000000L1439173

Built
1966
59 years old
Condition
Good
inspected April 2023
Type
Stringer/Multi-beam or Girder
Concrete
Length
133 ft
3 main spans
Daily traffic
250
2023 count
Owner
Federal
Bureau of Land Management

About this bridge

33 S 07 W 02.00: over Riffle Creek is a concrete stringer/multi-beam or girder carrying 33 S 07 W 02.00: over Riffle Creek in Douglas County, Oregon. It was built in 1966, so it is 59 years old, older 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 250 vehicles a day, roughly 10% of them trucks, projected to reach 375 by 2043. The structure is 133 ft (40.5 m) long and 29 ft wide. If it were closed, the detour would be 39.8 mi (64 km).

Carries33 S 07 W 02.00:
CrossesRiffle Creek
Location15.8 Miles NW of I-5 (exi
RouteFederal Lands Road 0
StateOregon
Coordinates42.78333, -123.58
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 inspectionApril 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation7: Better than present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating77.2 US tons
Inventory rating59.3 US tons

Structure

MaterialConcrete
DeckConcrete, cast-in-place
Main spans3
Design loadOther
Structure length133 ft (40.5 m)
Longest span85 ft (25.9 m)
Deck width29 ft (8.8 m)
Roadway width26 ft (7.9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic250 (2023)
Projected traffic375 by 2043
Trucks10%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed39.8 mi (64 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$3,000 (2021 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was 33 S 07 W 02.00: over Riffle Creek built?

It was built in 1966, making it 59 years old in 2025.

What condition is 33 S 07 W 02.00: over Riffle 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 April 2023.

How much traffic does 33 S 07 W 02.00: over Riffle Creek carry?

About 250 vehicles per day (2023 count), of which roughly 10% are trucks.

How long is 33 S 07 W 02.00: over Riffle Creek?

The structure is 133 ft (40.5 m) long with a longest span of 85 ft (25.9 m) and a deck 29 ft wide.

Who owns 33 S 07 W 02.00: over Riffle Creek?

It is owned by the Bureau of Land Management.