US Bridges

North Dakota ST over Fanno Creek

Poor

Washington County, Oregon · 0010 W Greenburg RD · Structure no. 67T006000000000

Built
1962
63 years old
Condition
Poor
inspected July 2024
Type
Stringer/Multi-beam or Girder
Wood or Timber
Length
48 ft
3 main spans
Daily traffic
6,925
2020 count
Owner
City
City or Municipal Highway Agency

About this bridge

North Dakota ST over Fanno Creek is a wood or timber stringer/multi-beam or girder carrying North Dakota ST over Fanno Creek in Washington County, Oregon. It was built in 1962, so it is 63 years old, older than the Oregon average of 49.9 years.

The most recent inspection reported to the Federal Highway Administration rates it in poor condition with a lowest component rating of 3 out of 9. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions. Its operating status is: open, would be posted or closed except for temporary shoring.

It carries about 6,925 vehicles a day, roughly 5% of them trucks, projected to reach 7,638 by 2025. The structure is 48 ft (14.6 m) long and 21 ft wide.

CarriesNorth Dakota ST
CrossesFanno Creek
Location0010 W Greenburg RD
RouteCity Street C0000
StateOregon
Coordinates45.43898, -122.7828
Functional classUrban Collector

Condition and inspection

Poor

The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.

ComponentRatingMeaning
Deck5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Superstructure4 PoorAdvanced section loss, deterioration, spalling or scour.
Substructure3 SeriousLoss of section, deterioration, spalling or scour have seriously affected primary structural components.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionJuly 2024
Inspection intervalevery 12 months
Operating statusOpen, would be posted or closed except for temporary shoring
ScourUnknown foundation; not evaluated for scour
Structural evaluation3: Basically intolerable, requiring high priority of corrective action
Deck geometry2: Basically intolerable, requiring high priority of replacement
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating23.6 US tons
Inventory rating18.2 US tons

Structure

MaterialWood or Timber
DeckWood or timber
Main spans3
Design loadHS 15
Structure length48 ft (14.6 m)
Longest span15 ft (4.6 m)
Deck width21 ft (6.3 m)
Roadway width19 ft (5.9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic6,925 (2020)
Projected traffic7,638 by 2025
Trucks5%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesWaterway
Detour if closed—
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 proposedWidening of existing bridge without deck rehabilitation
Estimated improvement cost$246,000
NavigationNo navigation control on waterway

Frequently asked questions

When was North Dakota ST over Fanno Creek built?

It was built in 1962, making it 63 years old in 2025.

What condition is North Dakota ST over Fanno Creek in?

The National Bridge Inventory rates it in poor condition. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions. The last reported inspection was in July 2024.

How much traffic does North Dakota ST over Fanno Creek carry?

About 6,925 vehicles per day (2020 count), of which roughly 5% are trucks.

How long is North Dakota ST over Fanno Creek?

The structure is 48 ft (14.6 m) long with a longest span of 15 ft (4.6 m) and a deck 21 ft wide.

Who owns North Dakota ST over Fanno Creek?

It is owned by the City or Municipal Highway Agency.