US Bridges

I-5 (hwy 001) Con over Beaver Dam Creek

Fair

Washington County, Oregon · 0.4 MI S of Tualatin R. · Structure no. 16956 001C28941

Built
1991
34 years old
Condition
Fair
inspected January 2024
Type
Box Beam or Girders - Multiple
Concrete Continuous
Length
290 ft
3 main spans
Daily traffic
12,336
2022 count
Owner
State
State Highway Agency

About this bridge

I-5 (hwy 001) Con over Beaver Dam Creek is a concrete continuous box beam or girders - multiple carrying I-5 (hwy 001) Con over Beaver Dam Creek in Washington County, Oregon. It was built in 1991, so it is 34 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 12,336 vehicles a day, roughly 9% of them trucks, projected to reach 12,600 by 2030. The structure is 290 ft (88.4 m) long and 39 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

Open in Google Maps
CarriesI-5 (hwy 001) Con
CrossesBeaver Dam Creek
Location0.4 MI S of Tualatin R.
RouteInterstate 5
CountyWashington County
StateOregon
Coordinates45.38174, -122.75161
Functional classUrban Principal Arterial - Interstate

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 protection8 Very GoodNo problems noted.
Last inspectionJanuary 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation3: Basically intolerable, requiring high priority of corrective action
Deck geometry7: Better than present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating21.4 US tons
Inventory rating16.4 US tons

Structure

Structure typeBox Beam or Girders - Multiple
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 25 or greater
Structure length290 ft (88.4 m)
Longest span110 ft (33.5 m)
Deck width39 ft (11.8 m)
Roadway width36 ft (11 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic12,336 (2022)
Projected traffic12,600 by 2030
Trucks9%
Lanes on structure2
Traffic directionOne-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.2 mi (2 km)
TollOn a free road
National Highway SystemYes

Ownership and planned work

OwnerState Highway Agency
Maintained byState 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 I-5 (hwy 001) Con over Beaver Dam Creek built?

It was built in 1991, making it 34 years old in 2025.

What condition is I-5 (hwy 001) Con over Beaver Dam 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 January 2024.

How much traffic does I-5 (hwy 001) Con over Beaver Dam Creek carry?

About 12,336 vehicles per day (2022 count), of which roughly 9% are trucks.

How long is I-5 (hwy 001) Con over Beaver Dam Creek?

The structure is 290 ft (88.4 m) long with a longest span of 110 ft (33.5 m) and a deck 39 ft wide.

Who owns I-5 (hwy 001) Con over Beaver Dam Creek?

It is owned by the State Highway Agency.