US Bridges

NW Lauren Ave. over Unnamed Channel

Good

Washington County, Oregon · MP 0.03 · Structure no. 24134 000 00003

Built
2021
4 years old
Condition
Good
inspected August 2023
Type
Culvert
Steel
Length
42 ft
1 main span
Daily traffic
100
2021 count
Owner
County
County Highway Agency

About this bridge

NW Lauren Ave. over Unnamed Channel is a steel culvert carrying NW Lauren Ave. over Unnamed Channel in Washington County, Oregon. It was built in 2021, so it is 4 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 100 vehicles a day, roughly 5% of them trucks, projected to reach 120 by 2041. The structure is 42 ft (12.8 m) long. If it were closed, the detour would be 123.7 mi (199 km).

Location

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CarriesNW Lauren Ave.
CrossesUnnamed Channel
LocationMP 0.03
RouteCounty Highway C0000
CountyWashington County
StateOregon
Coordinates45.57606, -122.83381
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
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Culvert7 GoodSome minor problems.
Last inspectionAugust 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourUnknown foundation; not evaluated for scour
Structural evaluation7: Better than present minimum criteria
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating98.9 US tons
Inventory rating76.1 US tons

Structure

Structure typeCulvert
MaterialSteel
DeckNot applicable
Main spans1
Design loadHL 93
Structure length42 ft (12.8 m)
Longest span42 ft (12.8 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic100 (2021)
Projected traffic120 by 2041
Trucks5%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesWaterway
Detour if closed123.7 mi (199 km)
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 NW Lauren Ave. over Unnamed Channel built?

It was built in 2021, making it 4 years old in 2025.

What condition is NW Lauren Ave. over Unnamed Channel 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 August 2023.

How much traffic does NW Lauren Ave. over Unnamed Channel carry?

About 100 vehicles per day (2021 count), of which roughly 5% are trucks.

How long is NW Lauren Ave. over Unnamed Channel?

The structure is 42 ft (12.8 m) long with a longest span of 42 ft (12.8 m).

Who owns NW Lauren Ave. over Unnamed Channel?

It is owned by the County Highway Agency.