US Bridges

Or 99W (hwy 001W) over Steel Br. E. Appr.

FairPosted for load

Multnomah County, Oregon · E. End of Steel Bridge · Structure no. 06683B01WX00046

Built
1910
115 years old, rebuilt 1985
Condition
Fair
inspected August 2023
Type
Girder and Floorbeam System
Steel
Length
304 ft
7 main spans
Daily traffic
11,732
2022 count
Owner
City
City or Municipal Highway Agency

About this bridge

Or 99W (hwy 001W) over Steel Br. E. Appr. is a steel girder and floorbeam system carrying Or 99W (hwy 001W) over Steel Br. E. Appr. in Multnomah County, Oregon. It was built in 1910 and reconstructed in 1985, so it is 115 years old, older 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 11,732 vehicles a day, roughly 10% of them trucks, projected to reach 12,300 by 2042. The structure is 304 ft (92.7 m) long and 44 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

Open in Google Maps
CarriesOr 99W (hwy 001W)
CrossesSteel Br. E. Appr.
LocationE. End of Steel Bridge
RouteState Highway 99
CountyMultnomah County
StateOregon
Coordinates45.52821, -122.6678
Functional classUrban Minor Arterial

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.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionAugust 2023
Inspection intervalevery 24 months
Operating statusPosted for load restriction
ScourBridge not over waterway
Structural evaluation4: Meets minimum tolerable limits to be left in place as is
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Approach roadway alignment8: Equal to present desirable criteria
Operating rating27.1 US tons
Inventory rating21.1 US tons

Structure

Structure typeGirder and Floorbeam System
MaterialSteel
DeckConcrete, cast-in-place
Main spans7
Design loadH 15
Structure length304 ft (92.7 m)
Longest span61 ft (18.6 m)
Deck width44 ft (13.4 m)
Roadway width35 ft (10.7 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic11,732 (2022)
Projected traffic12,300 by 2042
Trucks10%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesRailroad
Detour if closed1.2 mi (2 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCity or Municipal Highway Agency
Maintained byCity or Municipal Highway Agency
Historic statusHistorical significance not determinable at this time
Work proposedWidening of existing bridge without deck rehabilitation
Estimated improvement cost$1.6 million
NavigationNo navigation control on waterway

Frequently asked questions

When was Or 99W (hwy 001W) over Steel Br. E. Appr. built?

It was built in 1910, making it 115 years old in 2025. It was reconstructed in 1985.

What condition is Or 99W (hwy 001W) over Steel Br. E. Appr. 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 August 2023.

How much traffic does Or 99W (hwy 001W) over Steel Br. E. Appr. carry?

About 11,732 vehicles per day (2022 count), of which roughly 10% are trucks.

How long is Or 99W (hwy 001W) over Steel Br. E. Appr.?

The structure is 304 ft (92.7 m) long with a longest span of 61 ft (18.6 m) and a deck 44 ft wide.

Who owns Or 99W (hwy 001W) over Steel Br. E. Appr.?

It is owned by the City or Municipal Highway Agency.