US Bridges

Grand Blanc Road over Swartz Creek

Good

Genesee County, Michigan · Grand Blanc & US 23 X-Way · Structure no. 000000000002709

Built
2020
5 years old
Condition
Good
inspected October 2024
Type
Box Beam or Girders - Single or Spread
Prestressed Concrete
Length
66 ft
1 main span
Daily traffic
14,400
2019 count
Owner
County
County Highway Agency

About this bridge

Grand Blanc Road over Swartz Creek is a prestressed concrete box beam or girders - single or spread carrying Grand Blanc Road over Swartz Creek in Genesee County, Michigan. It was built in 2020, so it is 5 years old, younger 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 8 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 14,400 vehicles a day, roughly 10% of them trucks, projected to reach 17,600 by 2039. The structure is 66 ft (20.1 m) long and 66 ft wide. If it were closed, the detour would be 8.7 mi (14 km).

Location

Open in Google Maps
CarriesGrand Blanc Road
CrossesSwartz Creek
LocationGrand Blanc & US 23 X-Way
RouteCounty Highway 2002
CountyGenesee County
StateMichigan
Coordinates42.91481, -83.72036
Functional classUrban Minor Arterial

Condition and inspection

Good

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

ComponentRatingMeaning
Deck8 Very GoodNo problems noted.
Superstructure8 Very GoodNo problems noted.
Substructure8 Very GoodNo problems noted.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionOctober 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation8: Equal to present desirable criteria
Deck geometry7: Better than present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating78.6 US tons
Inventory rating59.6 US tons

Structure

Structure typeBox Beam or Girders - Single or Spread
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans1
Design loadHS 20 + Mod
Structure length66 ft (20.1 m)
Longest span65 ft (19.7 m)
Deck width66 ft (20.2 m)
Roadway width64 ft (19.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic14,400 (2019)
Projected traffic17,600 by 2039
Trucks10%
Lanes on structure4
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed8.7 mi (14 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCounty Highway Agency
Maintained byCounty Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost$118,000
NavigationNo navigation control on waterway

Frequently asked questions

When was Grand Blanc Road over Swartz Creek built?

It was built in 2020, making it 5 years old in 2025.

What condition is Grand Blanc Road over Swartz Creek 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 October 2024.

How much traffic does Grand Blanc Road over Swartz Creek carry?

About 14,400 vehicles per day (2019 count), of which roughly 10% are trucks.

How long is Grand Blanc Road over Swartz Creek?

The structure is 66 ft (20.1 m) long with a longest span of 65 ft (19.7 m) and a deck 66 ft wide.

Who owns Grand Blanc Road over Swartz Creek?

It is owned by the County Highway Agency.