US Bridges

I-496 EB over I-496 Ramp to Lansing RD

Fair

Ingham County, Michigan · W Lts of Lansing · Structure no. 000000000003736

Built
1969
56 years old, rebuilt 2021
Condition
Fair
inspected September 2023
Type
Stringer/Multi-beam or Girder
Steel
Length
143 ft
3 main spans
Daily traffic
25,725
2018 count
Owner
State
State Highway Agency

About this bridge

I-496 EB over I-496 Ramp to Lansing RD is a steel stringer/multi-beam or girder carrying I-496 EB over I-496 Ramp to Lansing RD in Ingham County, Michigan. It was built in 1969 and reconstructed in 2021, so it is 56 years old, older than the Michigan average of 48.3 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 25,725 vehicles a day, roughly 4% of them trucks, projected to reach 28,700 by 2040. The structure is 143 ft (43.6 m) long and 45 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

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CarriesI-496 EB
CrossesI-496 Ramp to Lansing RD
LocationW Lts of Lansing
RouteInterstate 496
CountyIngham County
StateMichigan
Coordinates42.7253, -84.58666
Functional classUrban Principal Arterial - Interstate

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.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionSeptember 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating80 US tons
Inventory rating46.1 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length143 ft (43.6 m)
Longest span55 ft (16.7 m)
Deck width45 ft (13.6 m)
Roadway width41 ft (12.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic25,725 (2018)
Projected traffic28,700 by 2040
Trucks4%
Lanes on structure2
Traffic directionOne-way traffic
CarriesHighway
CrossesHighway
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 proposedWidening of existing bridge without deck rehabilitation
Estimated improvement cost—
NavigationNot applicable (no waterway)

Frequently asked questions

When was I-496 EB over I-496 Ramp to Lansing RD built?

It was built in 1969, making it 56 years old in 2025. It was reconstructed in 2021.

What condition is I-496 EB over I-496 Ramp to Lansing RD 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 I-496 EB over I-496 Ramp to Lansing RD carry?

About 25,725 vehicles per day (2018 count), of which roughly 4% are trucks.

How long is I-496 EB over I-496 Ramp to Lansing RD?

The structure is 143 ft (43.6 m) long with a longest span of 55 ft (16.7 m) and a deck 45 ft wide.

Who owns I-496 EB over I-496 Ramp to Lansing RD?

It is owned by the State Highway Agency.