US Bridges

Dickey Prairie RD over N Fork Molalla

Good

Clackamas County, Oregon · 5 MI S JCT Feyer Park RD · Structure no. 21384 000 00352

Built
2011
14 years old
Condition
Good
inspected April 2023
Type
Stringer/Multi-beam or Girder
Steel
Length
161 ft
1 main span
Daily traffic
432
2020 count
Owner
County
County Highway Agency

About this bridge

Dickey Prairie RD over N Fork Molalla is a steel stringer/multi-beam or girder carrying Dickey Prairie RD over N Fork Molalla in Clackamas County, Oregon. It was built in 2011, so it is 14 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 432 vehicles a day, roughly 14% of them trucks, projected to reach 437 by 2025. The structure is 161 ft (49.1 m) long and 37 ft wide. If it were closed, the detour would be 0.6 mi (1 km).

CarriesDickey Prairie RD
CrossesN Fork Molalla
Location5 MI S JCT Feyer Park RD
RouteCounty Highway C0297
StateOregon
Coordinates45.0838, -122.4888
Functional classRural Major 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 protection8 Very GoodNo problems noted.
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 geometry6: Equal to present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating62.5 US tons
Inventory rating48.2 US tons

Structure

MaterialSteel
DeckConcrete, cast-in-place
Main spans1
Design loadHS 20
Structure length161 ft (49.1 m)
Longest span156 ft (47.5 m)
Deck width37 ft (11.3 m)
Roadway width34 ft (10.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic432 (2020)
Projected traffic437 by 2025
Trucks14%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed0.6 mi (1 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 Dickey Prairie RD over N Fork Molalla built?

It was built in 2011, making it 14 years old in 2025.

What condition is Dickey Prairie RD over N Fork Molalla 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 Dickey Prairie RD over N Fork Molalla carry?

About 432 vehicles per day (2020 count), of which roughly 14% are trucks.

How long is Dickey Prairie RD over N Fork Molalla?

The structure is 161 ft (49.1 m) long with a longest span of 156 ft (47.5 m) and a deck 37 ft wide.

Who owns Dickey Prairie RD over N Fork Molalla?

It is owned by the County Highway Agency.