US Bridges

Harrison over Flint River

Fair

Genesee County, Michigan · In Flint · Structure no. 000000000002844

Built
1953
72 years old, rebuilt 1983
Condition
Fair
inspected June 2023
Type
Stringer/Multi-beam or Girder
Steel
Length
146 ft
3 main spans
Daily traffic
6,867
1995 count
Owner
City
City or Municipal Highway Agency

About this bridge

Harrison over Flint River is a steel stringer/multi-beam or girder carrying Harrison over Flint River in Genesee County, Michigan. It was built in 1953 and reconstructed in 1983, so it is 72 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 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 6,867 vehicles a day, roughly 8% of them trucks, projected to reach 12,403 by 2015. The structure is 146 ft (44.5 m) long and 58 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

Open in Google Maps
CarriesHarrison
CrossesFlint River
LocationIn Flint
RouteCity Street 2002
CountyGenesee County
StateMichigan
Coordinates43.01921, -83.69161
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
Deck5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection7 GoodSome minor problems.
Last inspectionJune 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation6: Equal to present minimum criteria
Deck geometry2: Basically intolerable, requiring high priority of replacement
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment7: Better than present minimum criteria
Operating rating67.5 US tons
Inventory rating40.3 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans3 (+1 approach)
Design loadHS 20 + Mod
Structure length146 ft (44.5 m)
Longest span58 ft (17.6 m)
Deck width58 ft (17.8 m)
Roadway width44 ft (13.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic6,867 (1995)
Projected traffic12,403 by 2015
Trucks8%
Lanes on structure4
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesWaterway
Detour if closed1.2 mi (2 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 Harrison over Flint River built?

It was built in 1953, making it 72 years old in 2025. It was reconstructed in 1983.

What condition is Harrison 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 Harrison over Flint River carry?

About 6,867 vehicles per day (1995 count), of which roughly 8% are trucks.

How long is Harrison over Flint River?

The structure is 146 ft (44.5 m) long with a longest span of 58 ft (17.6 m) and a deck 58 ft wide.

Who owns Harrison over Flint River?

It is owned by the City or Municipal Highway Agency.