US Bridges

US-127 NB over US-127 Br

Fair

Gratiot County, Michigan · 1.5 MI S of ST Louis · Structure no. 000000000003100

Built
1961
64 years old
Condition
Fair
inspected May 2023
Type
Stringer/Multi-beam or Girder
Steel
Length
158 ft
3 main spans
Daily traffic
15,400
2015 count
Owner
State
State Highway Agency

About this bridge

US-127 NB over US-127 Br is a steel stringer/multi-beam or girder carrying US-127 NB over US-127 Br in Gratiot County, Michigan. It was built in 1961, so it is 64 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 15,400 vehicles a day, roughly 9% of them trucks, projected to reach 18,800 by 2035. The structure is 158 ft (48.2 m) long and 47 ft wide.

CarriesUS-127 NB
CrossesUS-127 Br
Location1.5 MI S of ST Louis
RouteU.S. Route 127
Coordinates43.38211, -84.60711
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
Deck5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionMay 2023
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 geometry8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating103.6 US tons
Inventory rating55.3 US tons

Structure

MaterialSteel
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length158 ft (48.2 m)
Longest span53 ft (16.2 m)
Deck width47 ft (14.4 m)
Roadway width42 ft (12.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic15,400 (2015)
Projected traffic18,800 by 2035
Trucks9%
Lanes on structure2
Traffic directionOne-way traffic
CarriesHighway
CrossesHighway
Detour if closed—
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 NB over US-127 Br built?

It was built in 1961, making it 64 years old in 2025.

What condition is US-127 NB over US-127 Br 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 May 2023.

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

About 15,400 vehicles per day (2015 count), of which roughly 9% are trucks.

How long is US-127 NB over US-127 Br?

The structure is 158 ft (48.2 m) long with a longest span of 53 ft (16.2 m) and a deck 47 ft wide.

Who owns US-127 NB over US-127 Br?

It is owned by the State Highway Agency.