US Bridges

Hamilton Avenue over Flint River

Fair

Genesee County, Michigan · In City of Flint · Structure no. 000000000002835

Built
1983
42 years old
Condition
Fair
inspected June 2023
Type
Stringer/Multi-beam or Girder
Steel
Length
166 ft
3 main spans
Daily traffic
11,187
1995 count
Owner
City
City or Municipal Highway Agency

About this bridge

Hamilton Avenue over Flint River is a steel stringer/multi-beam or girder carrying Hamilton Avenue over Flint River in Genesee County, Michigan. It was built in 1983, so it is 42 years old, younger 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 5 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 11,187 vehicles a day, roughly 8% of them trucks, projected to reach 20,205 by 2015. The structure is 166 ft (50.6 m) long and 81 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Location

Open in Google Maps
CarriesHamilton Avenue
CrossesFlint River
LocationIn City of Flint
RouteCity Street 2002
CountyGenesee County
StateMichigan
Coordinates43.0345, -83.68233
Functional classUrban Minor 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.
Superstructure7 GoodSome minor problems.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionJune 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry2: Basically intolerable, requiring high priority of replacement
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment7: Better than present minimum criteria
Operating rating65.4 US tons
Inventory rating39.2 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20 + Mod
Structure length166 ft (50.6 m)
Longest span56 ft (17 m)
Deck width81 ft (24.8 m)
Roadway width69 ft (21 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic11,187 (1995)
Projected traffic20,205 by 2015
Trucks8%
Lanes on structure6
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesWaterway
Detour if closed1.9 mi (3 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCity or Municipal Highway Agency
Maintained byCity or Municipal Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was Hamilton Avenue over Flint River built?

It was built in 1983, making it 42 years old in 2025.

What condition is Hamilton Avenue over Flint River 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 June 2023.

How much traffic does Hamilton Avenue over Flint River carry?

About 11,187 vehicles per day (1995 count), of which roughly 8% are trucks.

How long is Hamilton Avenue over Flint River?

The structure is 166 ft (50.6 m) long with a longest span of 56 ft (17 m) and a deck 81 ft wide.

Who owns Hamilton Avenue over Flint River?

It is owned by the City or Municipal Highway Agency.