US Bridges

Monroe Road over Looking Glass River

Fair

Clinton County, Michigan · 0.3 MI N of Howe RD · Structure no. 000000000001976

Built
2001
24 years old
Condition
Fair
inspected October 2023
Type
Box Beam or Girders - Multiple
Prestressed Concrete
Length
157 ft
2 main spans
Daily traffic
200
2002 count
Owner
County
County Highway Agency

About this bridge

Monroe Road over Looking Glass River is a prestressed concrete box beam or girders - multiple carrying Monroe Road over Looking Glass River in Clinton County, Michigan. It was built in 2001, so it is 24 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 200 vehicles a day, projected to reach 300 by 2022. The structure is 157 ft (48 m) long and 33 ft wide. If it were closed, the detour would be 5 mi (8 km).

Location

Open in Google Maps
CarriesMonroe Road
CrossesLooking Glass River
Location0.3 MI N of Howe RD
RouteCounty Highway 0
CountyClinton County
StateMichigan
Coordinates42.84935, -84.82805
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.
Channel and channel protection7 GoodSome minor problems.
Last inspectionOctober 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation6: Equal to present minimum criteria
Deck geometry6: Equal to present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment7: Better than present minimum criteria
Operating rating107.1 US tons
Inventory rating80 US tons

Structure

Structure typeBox Beam or Girders - Multiple
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans2
Design loadHS 25 or greater
Structure length157 ft (48 m)
Longest span108 ft (33 m)
Deck width33 ft (10.1 m)
Roadway width30 ft (9.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic200 (2002)
Projected traffic300 by 2022
Trucks0%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed5 mi (8 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 Monroe Road over Looking Glass River built?

It was built in 2001, making it 24 years old in 2025.

What condition is Monroe Road over Looking Glass River 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 October 2023.

How much traffic does Monroe Road over Looking Glass River carry?

About 200 vehicles per day (2002 count).

How long is Monroe Road over Looking Glass River?

The structure is 157 ft (48 m) long with a longest span of 108 ft (33 m) and a deck 33 ft wide.

Who owns Monroe Road over Looking Glass River?

It is owned by the County Highway Agency.