US Bridges

Parmater RD over I-75 NB

Fair

Otsego County, Michigan · 3.0 MI N of M-32 · Structure no. 000000000008679

Built
1961
64 years old
Condition
Fair
inspected September 2024
Type
Stringer/Multi-beam or Girder
Steel
Length
291 ft
6 main spans
Daily traffic
200
1988 count
Owner
State
State Highway Agency

About this bridge

Parmater RD over I-75 NB is a steel stringer/multi-beam or girder carrying Parmater RD over I-75 NB in Otsego County, Michigan. It was built in 1961, so it is 64 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 6 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 200 vehicles a day, roughly 2% of them trucks, projected to reach 150 by 1989. The structure is 291 ft (88.7 m) long and 31 ft wide. If it were closed, the detour would be 8.1 mi (13 km).

Location

Open in Google Maps
CarriesParmater RD
CrossesI-75 NB
Location3.0 MI N of M-32
RouteCounty Highway 0
CountyOtsego County
StateMichigan
Coordinates45.07082, -84.68895
Functional classRural Major Collector

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.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionSeptember 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation6: Equal to present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Approach roadway alignment6: Equal to present minimum criteria
Operating rating60.7 US tons
Inventory rating32.5 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans6
Design loadH 15
Structure length291 ft (88.7 m)
Longest span58 ft (17.6 m)
Deck width31 ft (9.4 m)
Roadway width27 ft (8.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic200 (1988)
Projected traffic150 by 1989
Trucks2%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesHighway
Detour if closed8.1 mi (13 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 proposedDeck replacement with only incidental widening
Estimated improvement cost$66,000
NavigationNot applicable (no waterway)

Frequently asked questions

When was Parmater RD over I-75 NB built?

It was built in 1961, making it 64 years old in 2025.

What condition is Parmater RD over I-75 NB 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 September 2024.

How much traffic does Parmater RD over I-75 NB carry?

About 200 vehicles per day (1988 count), of which roughly 2% are trucks.

How long is Parmater RD over I-75 NB?

The structure is 291 ft (88.7 m) long with a longest span of 58 ft (17.6 m) and a deck 31 ft wide.

Who owns Parmater RD over I-75 NB?

It is owned by the State Highway Agency.