US Bridges

County RD 400|SNOW over US-127 SB

Fair

Roscommon County, Michigan · 4.5 MI S of M-55 · Structure no. 000000000009001

Built
1967
58 years old
Condition
Fair
inspected August 2023
Type
Stringer/Multi-beam or Girder
Steel
Length
129 ft
3 main spans
Daily traffic
130
1988 count
Owner
State
State Highway Agency

About this bridge

County RD 400|SNOW over US-127 SB is a steel stringer/multi-beam or girder carrying County RD 400|SNOW over US-127 SB in Roscommon County, Michigan. It was built in 1967, so it is 58 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 130 vehicles a day, roughly 3% of them trucks, projected to reach 70 by 1989. The structure is 129 ft (39.2 m) long and 32 ft wide.

Location

Open in Google Maps
CarriesCounty RD 400|SNOW
CrossesUS-127 SB
Location4.5 MI S of M-55
RouteCounty Highway 0
CountyRoscommon County
StateMichigan
Coordinates44.26968, -84.80257
Functional classRural Minor Collector

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 inspectionAugust 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 geometry6: Equal to present minimum criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating67.9 US tons
Inventory rating31.4 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans3
Design loadH 15
Structure length129 ft (39.2 m)
Longest span60 ft (18.3 m)
Deck width32 ft (9.9 m)
Roadway width29 ft (8.7 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic130 (1988)
Projected traffic70 by 1989
Trucks3%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesHighway
Detour if closed—
TollOn a free road
National Highway SystemNo

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 County RD 400|SNOW over US-127 SB built?

It was built in 1967, making it 58 years old in 2025.

What condition is County RD 400|SNOW over US-127 SB 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 2023.

How much traffic does County RD 400|SNOW over US-127 SB carry?

About 130 vehicles per day (1988 count), of which roughly 3% are trucks.

How long is County RD 400|SNOW over US-127 SB?

The structure is 129 ft (39.2 m) long with a longest span of 60 ft (18.3 m) and a deck 32 ft wide.

Who owns County RD 400|SNOW over US-127 SB?

It is owned by the State Highway Agency.