US Bridges

Luder Road over Tuscola & Saginaw Bay RR

Fair

Tuscola County, Michigan · Village of Caro · Structure no. 000000000010673

Built
1984
41 years old
Condition
Fair
inspected July 2024
Type
Box Beam or Girders - Multiple
Prestressed Concrete
Length
84 ft
3 main spans
Daily traffic
649
2017 count
Owner
City
City or Municipal Highway Agency

About this bridge

Luder Road over Tuscola & Saginaw Bay RR is a prestressed concrete box beam or girders - multiple carrying Luder Road over Tuscola & Saginaw Bay RR in Tuscola County, Michigan. It was built in 1984, so it is 41 years old, younger 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 649 vehicles a day, roughly 14% of them trucks, projected to reach 792 by 2037. The structure is 84 ft (25.6 m) long and 35 ft wide. If it were closed, the detour would be 3.1 mi (5 km).

Location

Open in Google Maps
CarriesLuder Road
CrossesTuscola & Saginaw Bay RR
LocationVillage of Caro
RouteCity Street 0
CountyTuscola County
StateMichigan
Coordinates43.49668, -83.39754
Functional classRural Local

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.
Substructure7 GoodSome minor problems.
Last inspectionJuly 2024
Inspection intervalevery 24 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 rating61.1 US tons
Inventory rating36.8 US tons

Structure

Structure typeBox Beam or Girders - Multiple
MaterialPrestressed Concrete
DeckConcrete, precast panels
Main spans3
Design loadHS 20 + Mod
Structure length84 ft (25.6 m)
Longest span32 ft (9.7 m)
Deck width35 ft (10.6 m)
Roadway width27 ft (8.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic649 (2017)
Projected traffic792 by 2037
Trucks14%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesRailroad
Detour if closed3.1 mi (5 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCity or Municipal Highway Agency
Maintained byCity or Municipal 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 Luder Road over Tuscola & Saginaw Bay RR built?

It was built in 1984, making it 41 years old in 2025.

What condition is Luder Road over Tuscola & Saginaw Bay RR 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 July 2024.

How much traffic does Luder Road over Tuscola & Saginaw Bay RR carry?

About 649 vehicles per day (2017 count), of which roughly 14% are trucks.

How long is Luder Road over Tuscola & Saginaw Bay RR?

The structure is 84 ft (25.6 m) long with a longest span of 32 ft (9.7 m) and a deck 35 ft wide.

Who owns Luder Road over Tuscola & Saginaw Bay RR?

It is owned by the City or Municipal Highway Agency.