US Bridges

US-127 SB over US-127 Br

Poor

Gratiot County, Michigan · 2.0 MI S of ST Louis · Structure no. 000000000003099

Built
1961
64 years old, rebuilt 2004
Condition
Poor
inspected February 2025
Type
Stringer/Multi-beam or Girder
Steel
Length
147 ft
3 main spans
Daily traffic
9,181
2007 count
Owner
State
State Highway Agency

About this bridge

US-127 SB over US-127 Br is a steel stringer/multi-beam or girder carrying US-127 SB over US-127 Br in Gratiot County, Michigan. It was built in 1961 and reconstructed in 2004, 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 poor condition with a lowest component rating of 4 out of 9. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.

It carries about 9,181 vehicles a day, roughly 8% of them trucks, projected to reach 11,448 by 2018. The structure is 147 ft (44.7 m) long and 47 ft wide.

CarriesUS-127 SB
CrossesUS-127 Br
Location2.0 MI S of ST Louis
RouteU.S. Route 127
Coordinates43.37882, -84.60317
Functional classUrban Principal Arterial - Other Freeway or Expressway

Condition and inspection

Poor

The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.

ComponentRatingMeaning
Deck4 PoorAdvanced section loss, deterioration, spalling or scour.
Superstructure4 PoorAdvanced section loss, deterioration, spalling or scour.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionFebruary 2025
Inspection intervalevery 12 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation4: Meets minimum tolerable limits to be left in place as is
Deck geometry9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating74 US tons
Inventory rating44.3 US tons

Structure

MaterialSteel
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length147 ft (44.7 m)
Longest span63 ft (19.3 m)
Deck width47 ft (14.4 m)
Roadway width44 ft (13.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic9,181 (2007)
Projected traffic11,448 by 2018
Trucks8%
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 SB over US-127 Br built?

It was built in 1961, making it 64 years old in 2025. It was reconstructed in 2004.

What condition is US-127 SB over US-127 Br in?

The National Bridge Inventory rates it in poor condition. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions. The last reported inspection was in February 2025.

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

About 9,181 vehicles per day (2007 count), of which roughly 8% are trucks.

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

The structure is 147 ft (44.7 m) long with a longest span of 63 ft (19.3 m) and a deck 47 ft wide.

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

It is owned by the State Highway Agency.