US Bridges

Saginaw ST over I-69

Fair

Genesee County, Michigan · In Flint · Structure no. 000000000002608

Built
1970
55 years old
Condition
Fair
inspected January 2024
Type
Stringer/Multi-beam or Girder
Steel
Length
274 ft
2 main spans
Daily traffic
14,650
2011 count
Owner
State
State Highway Agency

About this bridge

Saginaw ST over I-69 is a steel stringer/multi-beam or girder carrying Saginaw 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 14,650 vehicles a day, roughly 4% of them trucks, projected to reach 16,200 by 2031. The structure is 274 ft (83.5 m) long and 73 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

Open in Google Maps
CarriesSaginaw ST
CrossesI-69
LocationIn Flint
RouteCity Street 0
CountyGenesee County
StateMichigan
Coordinates43.00855, -83.6836
Functional classUrban Other Principal Arterial

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.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionJanuary 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation6: Equal to present minimum criteria
Deck geometry2: Basically intolerable, requiring high priority of replacement
Approach roadway alignment8: Equal to present desirable criteria
Operating rating83.6 US tons
Inventory rating50 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans2
Design loadHS 20
Structure length274 ft (83.5 m)
Longest span141 ft (43 m)
Deck width73 ft (22.4 m)
Roadway width59 ft (18 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic14,650 (2011)
Projected traffic16,200 by 2031
Trucks4%
Lanes on structure5
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesHighway
Detour if closed1.2 mi (2 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 proposedNone recorded
Estimated improvement cost—
NavigationNot applicable (no waterway)

Frequently asked questions

When was Saginaw ST over I-69 built?

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

What condition is Saginaw 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 January 2024.

How much traffic does Saginaw ST over I-69 carry?

About 14,650 vehicles per day (2011 count), of which roughly 4% are trucks.

How long is Saginaw ST over I-69?

The structure is 274 ft (83.5 m) long with a longest span of 141 ft (43 m) and a deck 73 ft wide.

Who owns Saginaw ST over I-69?

It is owned by the State Highway Agency.