US Bridges

US-127 NB over Conrail

Fair

Ingham County, Michigan · 1.5 MI N of M-36 · Structure no. 000000000003719

Built
1966
59 years old
Condition
Fair
inspected June 2024
Type
Stringer/Multi-beam or Girder
Steel
Length
176 ft
3 main spans
Daily traffic
13,964
2007 count
Owner
State
State Highway Agency

About this bridge

US-127 NB over Conrail is a steel stringer/multi-beam or girder carrying US-127 NB over Conrail in Ingham County, Michigan. It was built in 1966, so it is 59 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 13,964 vehicles a day, roughly 8% of them trucks, projected to reach 16,862 by 2018. The structure is 176 ft (53.7 m) long and 42 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

Open in Google Maps
CarriesUS-127 NB
CrossesConrail
Location1.5 MI N of M-36
RouteU.S. Route 127
CountyIngham County
StateMichigan
Coordinates42.61924, -84.47585
Functional classUrban Principal Arterial - Other Freeway or Expressway

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.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure7 GoodSome minor problems.
Last inspectionJune 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating70.3 US tons
Inventory rating42.1 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length176 ft (53.7 m)
Longest span65 ft (19.7 m)
Deck width42 ft (12.9 m)
Roadway width38 ft (11.7 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic13,964 (2007)
Projected traffic16,862 by 2018
Trucks8%
Lanes on structure2
Traffic directionOne-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 proposedDeck replacement with only incidental widening
Estimated improvement cost$112,000
NavigationNot applicable (no waterway)

Frequently asked questions

When was US-127 NB over Conrail built?

It was built in 1966, making it 59 years old in 2025.

What condition is US-127 NB over Conrail 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 US-127 NB over Conrail carry?

About 13,964 vehicles per day (2007 count), of which roughly 8% are trucks.

How long is US-127 NB over Conrail?

The structure is 176 ft (53.7 m) long with a longest span of 65 ft (19.7 m) and a deck 42 ft wide.

Who owns US-127 NB over Conrail?

It is owned by the State Highway Agency.