US Bridges

Otter Creek RD over I-75

Fair

Monroe County, Michigan · 4.0 MI SW of Monroe · Structure no. 000000000007181

Built
1974
51 years old
Condition
Fair
inspected September 2023
Type
Stringer/Multi-beam or Girder
Steel
Length
229 ft
2 main spans
Daily traffic
1,875
2022 count
Owner
State
State Highway Agency

About this bridge

Otter Creek RD over I-75 is a steel stringer/multi-beam or girder carrying Otter Creek RD over I-75 in Monroe County, Michigan. It was built in 1974, so it is 51 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 1,875 vehicles a day, projected to reach 2,156 by 2042. The structure is 229 ft (69.8 m) long and 44 ft wide. If it were closed, the detour would be 3.7 mi (6 km).

Location

Open in Google Maps
CarriesOtter Creek RD
CrossesI-75
Location4.0 MI SW of Monroe
RouteCounty Highway 5830
CountyMonroe County
StateMichigan
Coordinates41.84328, -83.42003
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
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.
Last inspectionSeptember 2023
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 alignment8: Equal to present desirable criteria
Operating rating95.7 US tons
Inventory rating61.1 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans2
Design loadHS 20
Structure length229 ft (69.8 m)
Longest span117 ft (35.6 m)
Deck width44 ft (13.5 m)
Roadway width40 ft (12.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,875 (2022)
Projected traffic2,156 by 2042
Trucks—
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesHighway
Detour if closed3.7 mi (6 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 proposedNone recorded
Estimated improvement cost—
NavigationNot applicable (no waterway)

Frequently asked questions

When was Otter Creek RD over I-75 built?

It was built in 1974, making it 51 years old in 2025.

What condition is Otter Creek 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 September 2023.

How much traffic does Otter Creek RD over I-75 carry?

About 1,875 vehicles per day (2022 count).

How long is Otter Creek RD over I-75?

The structure is 229 ft (69.8 m) long with a longest span of 117 ft (35.6 m) and a deck 44 ft wide.

Who owns Otter Creek RD over I-75?

It is owned by the State Highway Agency.