US Bridges

I-69 WB over Huron & Eastern RR

Fair

Shiawassee County, Michigan · 1.2 MI SW of Genesee Col · Structure no. 000000000009745

Built
1961
64 years old
Condition
Fair
inspected June 2023
Type
Stringer/Multi-beam or Girder
Steel
Length
178 ft
3 main spans
Daily traffic
14,378
2007 count
Owner
State
State Highway Agency

About this bridge

I-69 WB over Huron & Eastern RR is a steel stringer/multi-beam or girder carrying I-69 WB over Huron & Eastern RR in Shiawassee County, Michigan. It was built in 1961, so it is 64 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 14,378 vehicles a day, roughly 20% of them trucks, projected to reach 15,340 by 2018. The structure is 178 ft (54.3 m) long and 47 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Location

Open in Google Maps
CarriesI-69 WB
CrossesHuron & Eastern RR
Location1.2 MI SW of Genesee Col
RouteInterstate 69
CountyShiawassee County
StateMichigan
Coordinates42.963, -83.95
Functional classRural 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
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.
Last inspectionJune 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 geometry8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating91.8 US tons
Inventory rating55 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length178 ft (54.3 m)
Longest span59 ft (18 m)
Deck width47 ft (14.4 m)
Roadway width42 ft (12.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic14,378 (2007)
Projected traffic15,340 by 2018
Trucks20%
Lanes on structure2
Traffic directionOne-way traffic
CarriesHighway
CrossesRailroad
Detour if closed1.9 mi (3 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-69 WB over Huron & Eastern RR built?

It was built in 1961, making it 64 years old in 2025.

What condition is I-69 WB over Huron & Eastern RR 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 June 2023.

How much traffic does I-69 WB over Huron & Eastern RR carry?

About 14,378 vehicles per day (2007 count), of which roughly 20% are trucks.

How long is I-69 WB over Huron & Eastern RR?

The structure is 178 ft (54.3 m) long with a longest span of 59 ft (18 m) and a deck 47 ft wide.

Who owns I-69 WB over Huron & Eastern RR?

It is owned by the State Highway Agency.