US Bridges

I-96 Bl over S Br Shiawassee River

Fair

Livingston County, Michigan · 1.9 MI W of Howell · Structure no. 000000000005762

Built
1918
107 years old, rebuilt 1932
Condition
Fair
inspected September 2023
Type
Stringer/Multi-beam or Girder
Steel
Length
40 ft
1 main span
Daily traffic
10,370
2007 count
Owner
State
State Highway Agency

About this bridge

I-96 Bl over S Br Shiawassee River is a steel stringer/multi-beam or girder carrying I-96 Bl over S Br Shiawassee River in Livingston County, Michigan. It was built in 1918 and reconstructed in 1932, so it is 107 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 10,370 vehicles a day, roughly 4% of them trucks, projected to reach 18,412 by 2018. The structure is 40 ft (12.2 m) long and 66 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Location

Open in Google Maps
CarriesI-96 Bl
CrossesS Br Shiawassee River
Location1.9 MI W of Howell
RouteInterstate 96
CountyLivingston County
StateMichigan
Coordinates42.61624, -83.96519
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
Deck5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionSeptember 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourScour critical; foundations unstable for calculated scour conditions
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry7: Better than present minimum criteria
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment7: Better than present minimum criteria
Operating rating57.9 US tons
Inventory rating34.6 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans1
Design loadH 15
Structure length40 ft (12.2 m)
Longest span40 ft (12.2 m)
Deck width66 ft (20.1 m)
Roadway width64 ft (19.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic10,370 (2007)
Projected traffic18,412 by 2018
Trucks4%
Lanes on structure4
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.9 mi (3 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 proposedDeck replacement with only incidental widening
Estimated improvement cost$30,000
NavigationNo navigation control on waterway

Frequently asked questions

When was I-96 Bl over S Br Shiawassee River built?

It was built in 1918, making it 107 years old in 2025. It was reconstructed in 1932.

What condition is I-96 Bl over S Br Shiawassee 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 September 2023.

How much traffic does I-96 Bl over S Br Shiawassee River carry?

About 10,370 vehicles per day (2007 count), of which roughly 4% are trucks.

How long is I-96 Bl over S Br Shiawassee River?

The structure is 40 ft (12.2 m) long with a longest span of 40 ft (12.2 m) and a deck 66 ft wide.

Who owns I-96 Bl over S Br Shiawassee River?

It is owned by the State Highway Agency.