US Bridges

Shepardsville RD over Maple River

Poor

Clinton County, Michigan · 100 S of Maple Rapids RD · Structure no. 000000000001938

Built
1970
55 years old
Condition
Poor
inspected October 2024
Type
Box Beam or Girders - Multiple
Prestressed Concrete
Length
159 ft
3 main spans
Daily traffic
677
2011 count
Owner
County
County Highway Agency

About this bridge

Shepardsville RD over Maple River is a prestressed concrete box beam or girders - multiple carrying Shepardsville RD over Maple River in Clinton County, Michigan. It was built in 1970, so it is 55 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 677 vehicles a day, roughly 2% of them trucks, projected to reach 1,223 by 2031. The structure is 159 ft (48.4 m) long and 31 ft wide. If it were closed, the detour would be 3.7 mi (6 km).

Location

Open in Google Maps
CarriesShepardsville RD
CrossesMaple River
Location100 S of Maple Rapids RD
RouteCounty Highway 0
CountyClinton County
StateMichigan
Coordinates43.10498, -84.4268
Functional classRural Minor Collector

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
Deck7 GoodSome minor problems.
Superstructure4 PoorAdvanced section loss, deterioration, spalling or scour.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionOctober 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation4: Meets minimum tolerable limits to be left in place as is
Deck geometry6: Equal to present minimum criteria
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating43.5 US tons
Inventory rating30.3 US tons

Structure

Structure typeBox Beam or Girders - Multiple
MaterialPrestressed Concrete
DeckOther
Main spans3
Design loadH 20
Structure length159 ft (48.4 m)
Longest span53 ft (16.1 m)
Deck width31 ft (9.5 m)
Roadway width30 ft (9.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic677 (2011)
Projected traffic1,223 by 2031
Trucks2%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.7 mi (6 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCounty Highway Agency
Maintained byCounty Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was Shepardsville RD over Maple River built?

It was built in 1970, making it 55 years old in 2025.

What condition is Shepardsville RD over Maple River 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 October 2024.

How much traffic does Shepardsville RD over Maple River carry?

About 677 vehicles per day (2011 count), of which roughly 2% are trucks.

How long is Shepardsville RD over Maple River?

The structure is 159 ft (48.4 m) long with a longest span of 53 ft (16.1 m) and a deck 31 ft wide.

Who owns Shepardsville RD over Maple River?

It is owned by the County Highway Agency.