US Bridges

Pierson RD over I-75

Fair

Genesee County, Michigan · 4 MI N of M-21 · Structure no. 000000000002505

Built
1973
52 years old
Condition
Fair
inspected August 2024
Type
Stringer/Multi-beam or Girder
Steel
Length
228 ft
2 main spans
Daily traffic
29,550
2007 count
Owner
State
State Highway Agency

About this bridge

Pierson RD over I-75 is a steel stringer/multi-beam or girder carrying Pierson RD over I-75 in Genesee County, Michigan. It was built in 1973, so it is 52 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 29,550 vehicles a day, roughly 5% of them trucks, projected to reach 51,720 by 2016. The structure is 228 ft (69.5 m) long and 94 ft wide.

Location

Open in Google Maps
CarriesPierson RD
CrossesI-75
Location4 MI N of M-21
RouteCounty Highway 2002
CountyGenesee County
StateMichigan
Coordinates43.06065, -83.7623
Functional classUrban Other Principal 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.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionAugust 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry9: Superior to present desirable 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
DeckConcrete, cast-in-place
Main spans2
Design loadH 20
Structure length228 ft (69.5 m)
Longest span114 ft (34.7 m)
Deck width94 ft (28.8 m)
Roadway width91 ft (27.6 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic29,550 (2007)
Projected traffic51,720 by 2016
Trucks5%
Lanes on structure5
Traffic directionTwo-way traffic
CarriesHighway
CrossesHighway
Detour if closed—
TollOn a free road
National Highway SystemYes

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 Pierson RD over I-75 built?

It was built in 1973, making it 52 years old in 2025.

What condition is Pierson RD over I-75 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 August 2024.

How much traffic does Pierson RD over I-75 carry?

About 29,550 vehicles per day (2007 count), of which roughly 5% are trucks.

How long is Pierson RD over I-75?

The structure is 228 ft (69.5 m) long with a longest span of 114 ft (34.7 m) and a deck 94 ft wide.

Who owns Pierson RD over I-75?

It is owned by the State Highway Agency.