US Bridges

I-675 NB over Kochville RD

Fair

Saginaw County, Michigan · 0.5 MI S of I-75 · Structure no. 000000000009150

Built
1971
54 years old, rebuilt 2009
Condition
Fair
inspected April 2024
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
306 ft
3 main spans
Daily traffic
3,061
2017 count
Owner
State
State Highway Agency

About this bridge

I-675 NB over Kochville RD is a steel continuous stringer/multi-beam or girder carrying I-675 NB over Kochville RD in Saginaw County, Michigan. It was built in 1971 and reconstructed in 2009, so it is 54 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 3,061 vehicles a day, roughly 10% of them trucks, projected to reach 3,250 by 2037. The structure is 306 ft (93.3 m) long and 53 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

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CarriesI-675 NB
CrossesKochville RD
Location0.5 MI S of I-75
RouteInterstate 675
CountySaginaw County
StateMichigan
Coordinates43.49403, -83.93667
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
Deck7 GoodSome minor problems.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionApril 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation6: Equal to present minimum criteria
Deck geometry9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating70 US tons
Inventory rating41.8 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20 + Mod
Structure length306 ft (93.3 m)
Longest span136 ft (41.6 m)
Deck width53 ft (16.1 m)
Roadway width51 ft (15.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic3,061 (2017)
Projected traffic3,250 by 2037
Trucks10%
Lanes on structure2
Traffic directionOne-way traffic
CarriesHighway
CrossesHighway
Detour if closed1.2 mi (2 km)
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-675 NB over Kochville RD built?

It was built in 1971, making it 54 years old in 2025. It was reconstructed in 2009.

What condition is I-675 NB over Kochville 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-675 NB over Kochville RD carry?

About 3,061 vehicles per day (2017 count), of which roughly 10% are trucks.

How long is I-675 NB over Kochville RD?

The structure is 306 ft (93.3 m) long with a longest span of 136 ft (41.6 m) and a deck 53 ft wide.

Who owns I-675 NB over Kochville RD?

It is owned by the State Highway Agency.