US Bridges

I-475 over Flint R W Blvd&r Side DR

Fair

Genesee County, Michigan · In Flint · Structure no. 000000000002637

Built
1976
49 years old
Condition
Fair
inspected April 2024
Type
Stringer/Multi-beam or Girder
Steel
Length
530 ft
6 main spans
Daily traffic
56,000
2007 count
Owner
State
State Highway Agency

About this bridge

I-475 over Flint R W Blvd&r Side DR is a steel stringer/multi-beam or girder carrying I-475 over Flint R W Blvd&r Side DR in Genesee County, Michigan. It was built in 1976, so it is 49 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. Its operating status is: open, would be posted or closed except for temporary shoring.

It carries about 56,000 vehicles a day, roughly 3% of them trucks, projected to reach 66,597 by 2018. The structure is 530 ft (161.5 m) long and 125 ft wide.

CarriesI-475
CrossesFlint R W Blvd&r Side DR
LocationIn Flint
RouteInterstate 475
Coordinates43.03849, -83.67684
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
Deck5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionApril 2024
Inspection intervalevery 24 months
Operating statusOpen, would be posted or closed except for temporary shoring
ScourScour critical; foundations unstable for calculated scour conditions
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry9: Superior to present desirable criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating82.1 US tons
Inventory rating49.3 US tons

Structure

MaterialSteel
DeckConcrete, cast-in-place
Main spans6
Design loadHS 25 or greater
Structure length530 ft (161.5 m)
Longest span123 ft (37.5 m)
Deck width125 ft (38 m)
Roadway width122 ft (37.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic56,000 (2007)
Projected traffic66,597 by 2018
Trucks3%
Lanes on structure6
Traffic directionTwo-way traffic
CarriesHighway
CrossesHighway and waterway
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 proposedDeck replacement with only incidental widening
Estimated improvement cost$531,000
NavigationNo navigation control on waterway

Frequently asked questions

When was I-475 over Flint R W Blvd&r Side DR built?

It was built in 1976, making it 49 years old in 2025.

What condition is I-475 over Flint R W Blvd&r Side DR 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-475 over Flint R W Blvd&r Side DR carry?

About 56,000 vehicles per day (2007 count), of which roughly 3% are trucks.

How long is I-475 over Flint R W Blvd&r Side DR?

The structure is 530 ft (161.5 m) long with a longest span of 123 ft (37.5 m) and a deck 125 ft wide.

Who owns I-475 over Flint R W Blvd&r Side DR?

It is owned by the State Highway Agency.