US Bridges

M-43 EB (saginaw) over Grand River

Fair

Ingham County, Michigan · In Lansing (saginaw St) · Structure no. 000000000003789

Built
2012
13 years old
Condition
Fair
inspected August 2024
Type
Stringer/Multi-beam or Girder
Steel
Length
285 ft
3 main spans
Daily traffic
18,900
2011 count
Owner
State
State Highway Agency

About this bridge

M-43 EB (saginaw) over Grand River is a steel stringer/multi-beam or girder carrying M-43 EB (saginaw) over Grand River in Ingham County, Michigan. It was built in 2012, so it is 13 years old, younger 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 6 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 18,900 vehicles a day, roughly 1% of them trucks, projected to reach 20,900 by 2031. The structure is 285 ft (86.9 m) long and 73 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

Open in Google Maps
CarriesM-43 EB (saginaw)
CrossesGrand River
LocationIn Lansing (saginaw St)
RouteState Highway 43
CountyIngham County
StateMichigan
Coordinates42.74091, -84.54895
Functional classUrban Other Principal 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
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionAugust 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation6: Equal to present minimum criteria
Deck geometry7: Better than present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating46.4 US tons
Inventory rating36 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans3
Design loadGreater than HL 93
Structure length285 ft (86.9 m)
Longest span158 ft (48.2 m)
Deck width73 ft (22.3 m)
Roadway width54 ft (16.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic18,900 (2011)
Projected traffic20,900 by 2031
Trucks1%
Lanes on structure3
Traffic directionOne-way traffic
CarriesHighway and pedestrian
CrossesWaterway
Detour if closed1.2 mi (2 km)
TollOn a free road
National Highway SystemYes

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—
NavigationNo navigation control on waterway

Frequently asked questions

When was M-43 EB (saginaw) over Grand River built?

It was built in 2012, making it 13 years old in 2025.

What condition is M-43 EB (saginaw) over Grand River 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 2024.

How much traffic does M-43 EB (saginaw) over Grand River carry?

About 18,900 vehicles per day (2011 count), of which roughly 1% are trucks.

How long is M-43 EB (saginaw) over Grand River?

The structure is 285 ft (86.9 m) long with a longest span of 158 ft (48.2 m) and a deck 73 ft wide.

Who owns M-43 EB (saginaw) over Grand River?

It is owned by the State Highway Agency.