US Bridges

I-75 NB over Bristol RD

Fair

Genesee County, Michigan · 1.0 MI SW of Flint · Structure no. 000000000002485

Built
2005
20 years old
Condition
Fair
inspected April 2024
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
153 ft
2 main spans
Daily traffic
89,742
2007 count
Owner
State
State Highway Agency

About this bridge

I-75 NB over Bristol RD is a steel continuous stringer/multi-beam or girder carrying I-75 NB over Bristol RD in Genesee County, Michigan. It was built in 2005, so it is 20 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 89,742 vehicles a day, roughly 11% of them trucks, projected to reach 97,765 by 2018. The structure is 153 ft (46.6 m) long and 139 ft wide.

Location

Open in Google Maps
CarriesI-75 NB
CrossesBristol RD
Location1.0 MI SW of Flint
RouteInterstate 75
CountyGenesee County
StateMichigan
Coordinates42.9735, -83.72564
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
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Last inspectionApril 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation7: Better than present minimum criteria
Deck geometry9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating66.8 US tons
Inventory rating40 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans2
Design loadHS 25 or greater
Structure length153 ft (46.6 m)
Longest span76 ft (23.1 m)
Deck width139 ft (42.4 m)
Roadway width133 ft (40.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic89,742 (2007)
Projected traffic97,765 by 2018
Trucks11%
Lanes on structure4
Traffic directionTwo-way traffic
CarriesHighway
CrossesHighway
Detour if closed—
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-75 NB over Bristol RD built?

It was built in 2005, making it 20 years old in 2025.

What condition is I-75 NB over Bristol 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 April 2024.

How much traffic does I-75 NB over Bristol RD carry?

About 89,742 vehicles per day (2007 count), of which roughly 11% are trucks.

How long is I-75 NB over Bristol RD?

The structure is 153 ft (46.6 m) long with a longest span of 76 ft (23.1 m) and a deck 139 ft wide.

Who owns I-75 NB over Bristol RD?

It is owned by the State Highway Agency.