US Bridges

Denney RD Access N over Fanno Creek

Fair

Washington County, Oregon · 001 N of Denney RD · Structure no. BB001 000000000

Built
1977
48 years old
Condition
Fair
inspected July 2024
Type
Slab
Prestressed Concrete
Length
33 ft
1 main span
Daily traffic
16
2020 count
Owner
City
City or Municipal Highway Agency

About this bridge

Denney RD Access N over Fanno Creek is a prestressed concrete slab carrying Denney RD Access N over Fanno Creek in Washington County, Oregon. It was built in 1977, so it is 48 years old, younger 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 6 out of 9. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

It carries about 16 vehicles a day, projected to reach 18 by 2025. The structure is 33 ft (10.1 m) long and 32 ft wide. If it were closed, the detour would be 123.7 mi (199 km).

CarriesDenney RD Access N
CrossesFanno Creek
Location001 N of Denney RD
RouteCity Street C0000
StateOregon
Coordinates45.46972, -122.78814
Functional classUrban 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.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionJuly 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation6: Equal to present minimum criteria
Deck geometry7: Better than present minimum criteria
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating84 US tons
Inventory rating50 US tons

Structure

Structure typeSlab
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans1
Design loadHS 20
Structure length33 ft (10.1 m)
Longest span32 ft (9.8 m)
Deck width32 ft (9.8 m)
Roadway width31 ft (9.6 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic16 (2020)
Projected traffic18 by 2025
Trucks0%
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

OwnerCity or Municipal Highway Agency
Maintained byCity or Municipal 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 Denney RD Access N over Fanno Creek built?

It was built in 1977, making it 48 years old in 2025.

What condition is Denney RD Access N over Fanno 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 July 2024.

How much traffic does Denney RD Access N over Fanno Creek carry?

About 16 vehicles per day (2020 count).

How long is Denney RD Access N over Fanno Creek?

The structure is 33 ft (10.1 m) long with a longest span of 32 ft (9.8 m) and a deck 32 ft wide.

Who owns Denney RD Access N over Fanno Creek?

It is owned by the City or Municipal Highway Agency.