US Bridges

US-127 Br over Conrail

Fair

Jackson County, Michigan · In Jackson · Structure no. 000000000004403

Built
1966
59 years old
Condition
Fair
inspected August 2024
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
139 ft
3 main spans
Daily traffic
13,875
2022 count
Owner
State
State Highway Agency

About this bridge

US-127 Br over Conrail is a prestressed concrete stringer/multi-beam or girder carrying US-127 Br over Conrail in Jackson 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 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 13,875 vehicles a day, roughly 4% of them trucks, projected to reach 16,225 by 2042. The structure is 139 ft (42.4 m) long and 76 ft wide. If it were closed, the detour would be 3.7 mi (6 km).

CarriesUS-127 Br
CrossesConrail
LocationIn Jackson
RouteU.S. Route 127
Coordinates42.23633, -84.39518
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.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionAugust 2024
Inspection intervalevery 21 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation6: Equal to present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Approach roadway alignment8: Equal to present desirable criteria
Operating rating79.7 US tons
Inventory rating45.3 US tons

Structure

MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length139 ft (42.4 m)
Longest span45 ft (13.7 m)
Deck width76 ft (23.3 m)
Roadway width59 ft (18.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic13,875 (2022)
Projected traffic16,225 by 2042
Trucks4%
Lanes on structure4
Traffic directionTwo-way traffic
CarriesHighway
CrossesRailroad
Detour if closed3.7 mi (6 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 US-127 Br over Conrail built?

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

What condition is US-127 Br 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 August 2024.

How much traffic does US-127 Br over Conrail carry?

About 13,875 vehicles per day (2022 count), of which roughly 4% are trucks.

How long is US-127 Br over Conrail?

The structure is 139 ft (42.4 m) long with a longest span of 45 ft (13.7 m) and a deck 76 ft wide.

Who owns US-127 Br over Conrail?

It is owned by the State Highway Agency.