US Bridges

NE Glass Plant RD over B-116 X Columbia Slough

Fair

Multnomah County, Oregon · W of I205/COLUMBIA Slough · Structure no. 16057 000000000

Built
1977
48 years old
Condition
Fair
inspected July 2024
Type
Slab
Prestressed Concrete
Length
103 ft
3 main spans
Daily traffic
1,945
2020 count
Owner
City
City or Municipal Highway Agency

About this bridge

NE Glass Plant RD over B-116 X Columbia Slough is a prestressed concrete slab carrying NE Glass Plant RD over B-116 X Columbia Slough in Multnomah County, Oregon. It was built in 1977, so it is 48 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.

It carries about 1,945 vehicles a day, roughly 10% of them trucks, projected to reach 2,145 by 2025. The structure is 103 ft (31.4 m) long and 36 ft wide. If it were closed, the detour would be 123.7 mi (199 km).

CarriesNE Glass Plant RD
CrossesB-116 X Columbia Slough
LocationW of I205/COLUMBIA Slough
RouteCity Street C0000
StateOregon
Coordinates45.56671, -122.55662
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
Deck8 Very GoodNo problems noted.
Superstructure8 Very GoodNo problems noted.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Channel and channel protection5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionJuly 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating47.2 US tons
Inventory rating36.4 US tons

Structure

Structure typeSlab
MaterialPrestressed Concrete
DeckConcrete, precast panels
Main spans3
Design loadHS 20
Structure length103 ft (31.4 m)
Longest span48 ft (14.6 m)
Deck width36 ft (11 m)
Roadway width33 ft (10.2 m)
Vertical clearance over deck42 ft (12.7 m)

Traffic and service

Average daily traffic1,945 (2020)
Projected traffic2,145 by 2025
Trucks10%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed123.7 mi (199 km)
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 proposedNone recorded
Estimated improvement cost—
NavigationNavigation control on waterway (bridge permit required)

Frequently asked questions

When was NE Glass Plant RD over B-116 X Columbia Slough built?

It was built in 1977, making it 48 years old in 2025.

What condition is NE Glass Plant RD over B-116 X Columbia Slough 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 July 2024.

How much traffic does NE Glass Plant RD over B-116 X Columbia Slough carry?

About 1,945 vehicles per day (2020 count), of which roughly 10% are trucks.

How long is NE Glass Plant RD over B-116 X Columbia Slough?

The structure is 103 ft (31.4 m) long with a longest span of 48 ft (14.6 m) and a deck 36 ft wide.

Who owns NE Glass Plant RD over B-116 X Columbia Slough?

It is owned by the City or Municipal Highway Agency.