US Bridges

Grand Traverse ST over I-69

Fair

Genesee County, Michigan · In Flint · Structure no. 000000000002605

Built
1970
55 years old
Condition
Fair
inspected October 2024
Type
Stringer/Multi-beam or Girder
Steel
Length
175 ft
2 main spans
Daily traffic
4,200
2011 count
Owner
State
State Highway Agency

About this bridge

Grand Traverse ST over I-69 is a steel stringer/multi-beam or girder carrying Grand Traverse ST over I-69 in Genesee County, Michigan. It was built in 1970, 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 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 4,200 vehicles a day, roughly 5% of them trucks, projected to reach 4,700 by 2031. The structure is 175 ft (53.3 m) long and 62 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Location

Open in Google Maps
CarriesGrand Traverse ST
CrossesI-69
LocationIn Flint
RouteCity Street 2002
CountyGenesee County
StateMichigan
Coordinates43.00641, -83.68753
Functional classUrban Local

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.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure7 GoodSome minor problems.
Last inspectionOctober 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation6: Equal to present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Approach roadway alignment8: Equal to present desirable criteria
Operating rating68.9 US tons
Inventory rating41.1 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans2
Design loadH 20
Structure length175 ft (53.3 m)
Longest span89 ft (27 m)
Deck width62 ft (19 m)
Roadway width48 ft (14.6 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic4,200 (2011)
Projected traffic4,700 by 2031
Trucks5%
Lanes on structure3
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesHighway
Detour if closed1.9 mi (3 km)
TollOn a free road
National Highway SystemNo

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 Grand Traverse ST over I-69 built?

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

What condition is Grand Traverse ST over I-69 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 October 2024.

How much traffic does Grand Traverse ST over I-69 carry?

About 4,200 vehicles per day (2011 count), of which roughly 5% are trucks.

How long is Grand Traverse ST over I-69?

The structure is 175 ft (53.3 m) long with a longest span of 89 ft (27 m) and a deck 62 ft wide.

Who owns Grand Traverse ST over I-69?

It is owned by the State Highway Agency.