US Bridges

Alexander RD over I-75 NB

Fair

Otsego County, Michigan · 2.3 MI SW Cheboygan Col · Structure no. 000000000008685

Built
1962
63 years old
Condition
Fair
inspected April 2024
Type
Stringer/Multi-beam or Girder
Steel
Length
164 ft
3 main spans
Daily traffic
100
1988 count
Owner
State
State Highway Agency

About this bridge

Alexander RD over I-75 NB is a steel stringer/multi-beam or girder carrying Alexander RD over I-75 NB in Otsego County, Michigan. It was built in 1962, so it is 63 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 100 vehicles a day, projected to reach 80 by 1989. The structure is 164 ft (50 m) long and 31 ft wide. If it were closed, the detour would be 11.2 mi (18 km).

Location

Open in Google Maps
CarriesAlexander RD
CrossesI-75 NB
Location2.3 MI SW Cheboygan Col
RouteCounty Highway 0
CountyOtsego County
StateMichigan
Coordinates45.17108, -84.64481
Functional classRural Local

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 inspectionApril 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation6: Equal to present minimum criteria
Deck geometry7: Better than present minimum criteria
Approach roadway alignment7: Better than present minimum criteria
Operating rating57.5 US tons
Inventory rating34.3 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans3
Design loadH 15
Structure length164 ft (50 m)
Longest span70 ft (21.2 m)
Deck width31 ft (9.5 m)
Roadway width28 ft (8.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic100 (1988)
Projected traffic80 by 1989
Trucks—
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesHighway
Detour if closed11.2 mi (18 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$46,000
NavigationNot applicable (no waterway)

Frequently asked questions

When was Alexander RD over I-75 NB built?

It was built in 1962, making it 63 years old in 2025.

What condition is Alexander 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 April 2024.

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

About 100 vehicles per day (1988 count).

How long is Alexander RD over I-75 NB?

The structure is 164 ft (50 m) long with a longest span of 70 ft (21.2 m) and a deck 31 ft wide.

Who owns Alexander RD over I-75 NB?

It is owned by the State Highway Agency.