US Bridges

Mt Morris RD over I-75

Fair

Genesee County, Michigan · 4.1 MI S of M-57 · Structure no. 000000000002509

Built
1957
68 years old, rebuilt 1987
Condition
Fair
inspected June 2024
Type
Stringer/Multi-beam or Girder
Steel
Length
202 ft
4 main spans
Daily traffic
9,877
1996 count
Owner
State
State Highway Agency

About this bridge

Mt Morris RD over I-75 is a steel stringer/multi-beam or girder carrying Mt Morris RD over I-75 in Genesee County, Michigan. It was built in 1957 and reconstructed in 1987, so it is 68 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 9,877 vehicles a day, roughly 5% of them trucks, projected to reach 17,800 by 2016. The structure is 202 ft (61.6 m) long and 35 ft wide.

Location

Open in Google Maps
CarriesMt Morris RD
CrossesI-75
Location4.1 MI S of M-57
RouteCounty Highway 2574
CountyGenesee County
StateMichigan
Coordinates43.11897, -83.76327
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 inspectionJune 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation6: Equal to present minimum criteria
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Approach roadway alignment8: Equal to present desirable criteria
Operating rating63.2 US tons
Inventory rating37.8 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans4
Design loadH 20
Structure length202 ft (61.6 m)
Longest span70 ft (21.3 m)
Deck width35 ft (10.7 m)
Roadway width32 ft (9.7 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic9,877 (1996)
Projected traffic17,800 by 2016
Trucks5%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesHighway
Detour if closed—
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 Mt Morris RD over I-75 built?

It was built in 1957, making it 68 years old in 2025. It was reconstructed in 1987.

What condition is Mt Morris 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 June 2024.

How much traffic does Mt Morris RD over I-75 carry?

About 9,877 vehicles per day (1996 count), of which roughly 5% are trucks.

How long is Mt Morris RD over I-75?

The structure is 202 ft (61.6 m) long with a longest span of 70 ft (21.3 m) and a deck 35 ft wide.

Who owns Mt Morris RD over I-75?

It is owned by the State Highway Agency.