US Bridges

Clyde RD over US-23

Fair

Livingston County, Michigan · 3.2 MI N of M-59 · Structure no. 000000000005751

Built
1961
64 years old
Condition
Fair
inspected August 2024
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
208 ft
4 main spans
Daily traffic
4,500
2005 count
Owner
State
State Highway Agency

About this bridge

Clyde RD over US-23 is a prestressed concrete stringer/multi-beam or girder carrying Clyde RD over US-23 in Livingston County, Michigan. It was built in 1961, 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 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 4,500 vehicles a day, roughly 3% of them trucks, projected to reach 5,175 by 2025. The structure is 208 ft (63.5 m) long and 31 ft wide.

CarriesClyde RD
CrossesUS-23
Location3.2 MI N of M-59
RouteCounty Highway 4770
Coordinates42.67689, -83.75972
Functional classRural Major 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
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure7 GoodSome minor problems.
Last inspectionAugust 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation6: Equal to present minimum criteria
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Approach roadway alignment8: Equal to present desirable criteria
Operating rating48.9 US tons
Inventory rating29.3 US tons

Structure

MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans4
Design loadH 15
Structure length208 ft (63.5 m)
Longest span71 ft (21.5 m)
Deck width31 ft (9.3 m)
Roadway width28 ft (8.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic4,500 (2005)
Projected traffic5,175 by 2025
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 Clyde RD over US-23 built?

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

What condition is Clyde RD over US-23 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 2024.

How much traffic does Clyde RD over US-23 carry?

About 4,500 vehicles per day (2005 count), of which roughly 3% are trucks.

How long is Clyde RD over US-23?

The structure is 208 ft (63.5 m) long with a longest span of 71 ft (21.5 m) and a deck 31 ft wide.

Who owns Clyde RD over US-23?

It is owned by the State Highway Agency.