US Bridges

14th ST over I-475

Good

Genesee County, Michigan · In Flint · Structure no. 000000000002700

Built
1971
54 years old, rebuilt 2010
Condition
Good
inspected July 2024
Type
Stringer/Multi-beam or Girder
Steel
Length
165 ft
2 main spans
Daily traffic
1,794
1992 count
Owner
State
State Highway Agency

About this bridge

14th ST over I-475 is a steel stringer/multi-beam or girder carrying 14th ST over I-475 in Genesee County, Michigan. It was built in 1971 and reconstructed in 2010, 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 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 1,794 vehicles a day, roughly 1% of them trucks, projected to reach 1,982 by 2012. The structure is 165 ft (50.4 m) long and 37 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Location

Open in Google Maps
Carries14th ST
CrossesI-475
LocationIn Flint
RouteCity Street 0
CountyGenesee County
StateMichigan
Coordinates43.00535, -83.67714
Functional classUrban Local

Condition and inspection

Good

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

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Last inspectionJuly 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation7: Better than present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Approach roadway alignment5: Somewhat better than minimum adequacy to tolerate being left in place as is
Operating rating89 US tons
Inventory rating53.2 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans2
Design loadHS 20
Structure length165 ft (50.4 m)
Longest span79 ft (24.2 m)
Deck width37 ft (11.3 m)
Roadway width28 ft (8.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,794 (1992)
Projected traffic1,982 by 2012
Trucks1%
Lanes on structure2
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 14th ST over I-475 built?

It was built in 1971, making it 54 years old in 2025. It was reconstructed in 2010.

What condition is 14th ST over I-475 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 July 2024.

How much traffic does 14th ST over I-475 carry?

About 1,794 vehicles per day (1992 count), of which roughly 1% are trucks.

How long is 14th ST over I-475?

The structure is 165 ft (50.4 m) long with a longest span of 79 ft (24.2 m) and a deck 37 ft wide.

Who owns 14th ST over I-475?

It is owned by the State Highway Agency.