US Bridges

Greener Road over Rock Creek

Good

Washington County, Oregon · North Plains · Structure no. 21013 000 00000

Built
2009
16 years old
Condition
Good
inspected July 2024
Type
Slab
Concrete
Length
25 ft
1 main span
Daily traffic
25
2015 count
Owner
County
County Highway Agency

About this bridge

Greener Road over Rock Creek is a concrete slab carrying Greener Road over Rock Creek in Washington County, Oregon. It was built in 2009, so it is 16 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 25 vehicles a day, roughly 2% of them trucks, projected to reach 30 by 2035. The structure is 25 ft (7.6 m) long and 15 ft wide.

CarriesGreener Road
CrossesRock Creek
LocationNorth Plains
RouteCity Street 0
StateOregon
Coordinates45.73961, -123.05511
Functional classRural Local

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 protection4 PoorAdvanced section loss, deterioration, spalling or scour.
Last inspectionJuly 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourScour critical; foundations unstable for calculated scour conditions
Structural evaluation6: Equal to present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating36.4 US tons
Inventory rating28.2 US tons

Structure

Structure typeSlab
MaterialConcrete
DeckConcrete, precast panels
Main spans1
Design loadHL 93
Structure length25 ft (7.6 m)
Longest span25 ft (7.6 m)
Deck width15 ft (4.6 m)
Roadway width14 ft (4.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic25 (2015)
Projected traffic30 by 2035
Trucks2%
Lanes on structure1
Traffic directionOne-lane bridge for two-way traffic
CarriesHighway
CrossesWaterway
Detour if closed—
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCounty Highway Agency
Maintained byCounty Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was Greener Road over Rock Creek built?

It was built in 2009, making it 16 years old in 2025.

What condition is Greener Road over Rock 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 2024.

How much traffic does Greener Road over Rock Creek carry?

About 25 vehicles per day (2015 count), of which roughly 2% are trucks.

How long is Greener Road over Rock Creek?

The structure is 25 ft (7.6 m) long with a longest span of 25 ft (7.6 m) and a deck 15 ft wide.

Who owns Greener Road over Rock Creek?

It is owned by the County Highway Agency.