US Bridges

I-75 SB over CSX RR

Fair

Genesee County, Michigan · 1.8 MI NW of Oakland Col · Structure no. 000000000002624

Built
1962
63 years old, rebuilt 2004
Condition
Fair
inspected June 2024
Type
Stringer/Multi-beam or Girder
Steel
Length
232 ft
3 main spans
Daily traffic
21,217
2007 count
Owner
State
State Highway Agency

About this bridge

I-75 SB over CSX RR is a steel stringer/multi-beam or girder carrying I-75 SB over CSX RR in Genesee County, Michigan. It was built in 1962 and reconstructed in 2004, so it is 63 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 21,217 vehicles a day, roughly 12% of them trucks, projected to reach 27,465 by 2018. The structure is 232 ft (70.7 m) long and 54 ft wide. If it were closed, the detour would be 3.1 mi (5 km).

Location

Open in Google Maps
CarriesI-75 SB
CrossesCSX RR
Location1.8 MI NW of Oakland Col
RouteInterstate 75
CountyGenesee County
StateMichigan
Coordinates42.89278, -83.62849
Functional classUrban Principal Arterial - Other Freeway or Expressway

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure7 GoodSome minor problems.
Last inspectionJune 2024
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 geometry4: Meets minimum tolerable limits to be left in place as is
Approach roadway alignment8: Equal to present desirable criteria
Operating rating100.3 US tons
Inventory rating60 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length232 ft (70.7 m)
Longest span93 ft (28.3 m)
Deck width54 ft (16.4 m)
Roadway width50 ft (15.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic21,217 (2007)
Projected traffic27,465 by 2018
Trucks12%
Lanes on structure3
Traffic directionOne-way traffic
CarriesHighway
CrossesRailroad
Detour if closed3.1 mi (5 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 proposedDeck replacement with only incidental widening
Estimated improvement cost$540,000
NavigationNot applicable (no waterway)

Frequently asked questions

When was I-75 SB over CSX RR built?

It was built in 1962, making it 63 years old in 2025. It was reconstructed in 2004.

What condition is I-75 SB over CSX 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 2024.

How much traffic does I-75 SB over CSX RR carry?

About 21,217 vehicles per day (2007 count), of which roughly 12% are trucks.

How long is I-75 SB over CSX RR?

The structure is 232 ft (70.7 m) long with a longest span of 93 ft (28.3 m) and a deck 54 ft wide.

Who owns I-75 SB over CSX RR?

It is owned by the State Highway Agency.