US Bridges

North Railroad Ave over Milton Creek

FairPosted for load

Columbia County, Oregon · Port of St. Helens · Structure no. 21280 000000000

Built
1999
26 years old
Condition
Fair
inspected September 2023
Type
Truss - Thru
Steel
Length
170 ft
1 main span
Daily traffic
63
2020 count
Owner
State
Other State Agency

About this bridge

North Railroad Ave over Milton Creek is a steel truss - thru carrying North Railroad Ave over Milton Creek in Columbia County, Oregon. It was built in 1999, so it is 26 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 5 out of 9. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound. Its operating status is: posted for load restriction.

It carries about 63 vehicles a day, roughly 1% of them trucks, projected to reach 70 by 2025. The structure is 170 ft (51.8 m) long and 14 ft wide.

Location

Open in Google Maps
CarriesNorth Railroad Ave
CrossesMilton Creek
LocationPort of St. Helens
RouteCity Street 0
CountyColumbia County
StateOregon
Coordinates45.8404, -122.814
Functional classUrban Local

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Deck5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
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 inspectionSeptember 2023
Inspection intervalevery 24 months
Operating statusPosted for load restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation4: Meets minimum tolerable limits to be left in place as is
Deck geometry6: Equal to present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating16.1 US tons
Inventory rating12.5 US tons

Structure

Structure typeTruss - Thru
MaterialSteel
DeckWood or timber
Main spans1 (+2 approach)
Design loadH 20
Structure length170 ft (51.8 m)
Longest span130 ft (39.6 m)
Deck width14 ft (4.3 m)
Roadway width14 ft (4.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic63 (2020)
Projected traffic70 by 2025
Trucks1%
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

OwnerOther State Agency
Maintained byOther State Agency
Historic statusHistorical significance not determinable at this time
Work proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was North Railroad Ave over Milton Creek built?

It was built in 1999, making it 26 years old in 2025.

What condition is North Railroad Ave over Milton 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 September 2023.

How much traffic does North Railroad Ave over Milton Creek carry?

About 63 vehicles per day (2020 count), of which roughly 1% are trucks.

How long is North Railroad Ave over Milton Creek?

The structure is 170 ft (51.8 m) long with a longest span of 130 ft (39.6 m) and a deck 14 ft wide.

Who owns North Railroad Ave over Milton Creek?

It is owned by the Other State Agency.