US Bridges

I-96 WB over Portland RD

Poor

Ionia County, Michigan · 6.0 MI E of M-66 · Structure no. 000000000003989

Built
1958
67 years old
Condition
Poor
inspected December 2024
Type
Tee Beam
Concrete Continuous
Length
141 ft
3 main spans
Daily traffic
19,963
2007 count
Owner
State
State Highway Agency

About this bridge

I-96 WB over Portland RD is a concrete continuous tee beam carrying I-96 WB over Portland RD in Ionia County, Michigan. It was built in 1958, so it is 67 years old, older than the Michigan average of 48.3 years.

The most recent inspection reported to the Federal Highway Administration rates it in poor condition with a lowest component rating of 4 out of 9. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.

It carries about 19,963 vehicles a day, roughly 16% of them trucks, projected to reach 19,691 by 2018. The structure is 141 ft (42.9 m) long and 47 ft wide.

CarriesI-96 WB
CrossesPortland RD
Location6.0 MI E of M-66
RouteInterstate 96
Coordinates42.87143, -84.96252
Functional classRural Principal Arterial - Interstate

Condition and inspection

Poor

The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.

ComponentRatingMeaning
Deck4 PoorAdvanced section loss, deterioration, spalling or scour.
Superstructure4 PoorAdvanced section loss, deterioration, spalling or scour.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionDecember 2024
Inspection intervalevery 12 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation4: Meets minimum tolerable limits to be left in place as is
Deck geometry8: Equal to present desirable criteria
Approach roadway alignment7: Better than present minimum criteria
Operating rating61.4 US tons
Inventory rating37.1 US tons

Structure

Structure typeTee Beam
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length141 ft (42.9 m)
Longest span55 ft (16.7 m)
Deck width47 ft (14.4 m)
Roadway width42 ft (12.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic19,963 (2007)
Projected traffic19,691 by 2018
Trucks16%
Lanes on structure2
Traffic directionOne-way traffic
CarriesHighway
CrossesHighway
Detour if closed—
TollOn a free road
National Highway SystemYes
Strategic Highway NetworkInterstate STRAHNET route

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—
NavigationNot applicable (no waterway)

Frequently asked questions

When was I-96 WB over Portland RD built?

It was built in 1958, making it 67 years old in 2025.

What condition is I-96 WB over Portland RD in?

The National Bridge Inventory rates it in poor condition. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions. The last reported inspection was in December 2024.

How much traffic does I-96 WB over Portland RD carry?

About 19,963 vehicles per day (2007 count), of which roughly 16% are trucks.

How long is I-96 WB over Portland RD?

The structure is 141 ft (42.9 m) long with a longest span of 55 ft (16.7 m) and a deck 47 ft wide.

Who owns I-96 WB over Portland RD?

It is owned by the State Highway Agency.