US Bridges

M-120 over CSX RR

Fair

Muskegon County, Michigan · 0.2 MI NE of N Muskegon · Structure no. 000000000007556

Built
1985
40 years old
Condition
Fair
inspected April 2024
Type
Stringer/Multi-beam or Girder
Steel
Length
129 ft
3 main spans
Daily traffic
15,637
2007 count
Owner
State
State Highway Agency

About this bridge

M-120 over CSX RR is a steel stringer/multi-beam or girder carrying M-120 over CSX RR in Muskegon County, Michigan. It was built in 1985, so it is 40 years old, younger 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 15,637 vehicles a day, roughly 6% of them trucks, projected to reach 16,540 by 2018. The structure is 129 ft (39.3 m) long and 52 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

Open in Google Maps
CarriesM-120
CrossesCSX RR
Location0.2 MI NE of N Muskegon
RouteState Highway 120
CountyMuskegon County
StateMichigan
Coordinates43.27332, -86.24066
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.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure7 GoodSome minor problems.
Last inspectionApril 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation6: Equal to present minimum criteria
Deck geometry9: Superior to present desirable criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating79.3 US tons
Inventory rating47.5 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length129 ft (39.3 m)
Longest span44 ft (13.3 m)
Deck width52 ft (15.8 m)
Roadway width49 ft (14.9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic15,637 (2007)
Projected traffic16,540 by 2018
Trucks6%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesRailroad
Detour if closed1.2 mi (2 km)
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 M-120 over CSX RR built?

It was built in 1985, making it 40 years old in 2025.

What condition is M-120 over CSX RR 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 M-120 over CSX RR carry?

About 15,637 vehicles per day (2007 count), of which roughly 6% are trucks.

How long is M-120 over CSX RR?

The structure is 129 ft (39.3 m) long with a longest span of 44 ft (13.3 m) and a deck 52 ft wide.

Who owns M-120 over CSX RR?

It is owned by the State Highway Agency.