US Bridges

I-96 over Portland Trail

Good

Ionia County, Michigan · 1.0 M SE of Portland · Structure no. 000000000013392

Built
2013
12 years old
Condition
Good
inspected March 2023
Type
Culvert
Concrete
Length
25 ft
1 main span
Daily traffic
35,000
2010 count
Owner
State
State Highway Agency

About this bridge

I-96 over Portland Trail is a concrete culvert carrying I-96 over Portland Trail in Ionia County, Michigan. It was built in 2013, so it is 12 years old, younger than the Michigan average of 48.3 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 35,000 vehicles a day, roughly 12% of them trucks, projected to reach 42,381 by 2032. The structure is 25 ft (7.7 m) long. If it were closed, the detour would be 1.2 mi (2 km).

Location

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CarriesI-96
CrossesPortland Trail
Location1.0 M SE of Portland
RouteInterstate 96
CountyIonia County
StateMichigan
Coordinates42.85953, -84.88222
Functional classRural Principal Arterial - Interstate

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Culvert7 GoodSome minor problems.
Last inspectionMarch 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating103.6 US tons
Inventory rating80 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckNot applicable
Main spans1
Design loadGreater than HL 93
Structure length25 ft (7.7 m)
Longest span25 ft (7.7 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic35,000 (2010)
Projected traffic42,381 by 2032
Trucks12%
Lanes on structure6
Traffic directionTwo-way traffic
CarriesHighway
CrossesPedestrian / bicycle
Detour if closed1.2 mi (2 km)
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 over Portland Trail built?

It was built in 2013, making it 12 years old in 2025.

What condition is I-96 over Portland Trail 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 March 2023.

How much traffic does I-96 over Portland Trail carry?

About 35,000 vehicles per day (2010 count), of which roughly 12% are trucks.

How long is I-96 over Portland Trail?

The structure is 25 ft (7.7 m) long with a longest span of 25 ft (7.7 m).

Who owns I-96 over Portland Trail?

It is owned by the State Highway Agency.