US Bridges

Jennings RD over I-475

Fair

Genesee County, Michigan · 0.6 MI E of N JCT I-75 · Structure no. 000000000002687

Built
1971
54 years old
Condition
Fair
inspected February 2025
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
231 ft
2 main spans
Daily traffic
2,000
1996 count
Owner
State
State Highway Agency

About this bridge

Jennings RD over I-475 is a steel continuous stringer/multi-beam or girder carrying Jennings RD over I-475 in Genesee County, Michigan. It was built in 1971, 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 2,000 vehicles a day, roughly 3% of them trucks, projected to reach 3,600 by 2016. The structure is 231 ft (70.4 m) long and 40 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Location

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CarriesJennings RD
CrossesI-475
Location0.6 MI E of N JCT I-75
RouteCounty Highway 0
CountyGenesee County
StateMichigan
Coordinates43.09623, -83.7537
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.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Last inspectionFebruary 2025
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation7: Better than present minimum criteria
Deck geometry6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating98.5 US tons
Inventory rating59 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans2
Design loadHS 20
Structure length231 ft (70.4 m)
Longest span116 ft (35.3 m)
Deck width40 ft (12.3 m)
Roadway width38 ft (11.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic2,000 (1996)
Projected traffic3,600 by 2016
Trucks3%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
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 Jennings RD over I-475 built?

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

What condition is Jennings RD over I-475 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 February 2025.

How much traffic does Jennings RD over I-475 carry?

About 2,000 vehicles per day (1996 count), of which roughly 3% are trucks.

How long is Jennings RD over I-475?

The structure is 231 ft (70.4 m) long with a longest span of 116 ft (35.3 m) and a deck 40 ft wide.

Who owns Jennings RD over I-475?

It is owned by the State Highway Agency.