US Bridges

I-69 on RMP&(9th ) over I-69 & I-475 Ramp a

Good

Genesee County, Michigan · In Flint · Structure no. 000000000002661

Built
1970
55 years old, rebuilt 2022
Condition
Good
inspected April 2024
Type
Stringer/Multi-beam or Girder
Steel
Length
133 ft
1 main span
Daily traffic
3,650
1982 count
Owner
State
State Highway Agency

About this bridge

I-69 on RMP&(9th ) over I-69 & I-475 Ramp a is a steel stringer/multi-beam or girder carrying I-69 on RMP&(9th ) over I-69 & I-475 Ramp a in Genesee County, Michigan. It was built in 1970 and reconstructed in 2022, so it is 55 years old, older than the Michigan average of 48.3 years.

The most recent inspection reported to the Federal Highway Administration rates it in good condition with a lowest component rating of 7 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 3,650 vehicles a day, roughly 6% of them trucks, projected to reach 4,198 by 2002. The structure is 133 ft (40.4 m) long and 39 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Location

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CarriesI-69 on RMP&(9th )
CrossesI-69 & I-475 Ramp a
LocationIn Flint
RouteInterstate 69
CountyGenesee County
StateMichigan
Coordinates43.00887, -83.68254
Functional classUrban Principal Arterial - Interstate

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Deck8 Very GoodNo problems noted.
Superstructure7 GoodSome minor problems.
Substructure8 Very GoodNo problems noted.
Last inspectionApril 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation7: Better than present minimum criteria
Deck geometry7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating87.5 US tons
Inventory rating52.1 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans1
Design loadHS 20
Structure length133 ft (40.4 m)
Longest span128 ft (39.1 m)
Deck width39 ft (12 m)
Roadway width36 ft (11 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic3,650 (1982)
Projected traffic4,198 by 2002
Trucks6%
Lanes on structure2
Traffic directionOne-way traffic
CarriesHighway
CrossesHighway
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—
NavigationNot applicable (no waterway)

Frequently asked questions

When was I-69 on RMP&(9th ) over I-69 & I-475 Ramp a built?

It was built in 1970, making it 55 years old in 2025. It was reconstructed in 2022.

What condition is I-69 on RMP&(9th ) over I-69 & I-475 Ramp a in?

The National Bridge Inventory rates it in good condition. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted. The last reported inspection was in April 2024.

How much traffic does I-69 on RMP&(9th ) over I-69 & I-475 Ramp a carry?

About 3,650 vehicles per day (1982 count), of which roughly 6% are trucks.

How long is I-69 on RMP&(9th ) over I-69 & I-475 Ramp a?

The structure is 133 ft (40.4 m) long with a longest span of 128 ft (39.1 m) and a deck 39 ft wide.

Who owns I-69 on RMP&(9th ) over I-69 & I-475 Ramp a?

It is owned by the State Highway Agency.