US Bridges

Hartley Road over Bird Creek

Fair

Hillsdale County, Michigan · 0.3 Mile E of Pittsford · Structure no. 000000000003366

Built
1966
59 years old
Condition
Fair
inspected November 2024
Type
Box Beam or Girders - Multiple
Prestressed Concrete
Length
60 ft
1 main span
Daily traffic
204
2014 count
Owner
County
County Highway Agency

About this bridge

Hartley Road over Bird Creek is a prestressed concrete box beam or girders - multiple carrying Hartley Road over Bird Creek in Hillsdale County, Michigan. It was built in 1966, so it is 59 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 204 vehicles a day, projected to reach 335 by 2038. The structure is 60 ft (18.2 m) long and 30 ft wide. If it were closed, the detour would be 3.1 mi (5 km).

Location

Open in Google Maps
CarriesHartley Road
CrossesBird Creek
Location0.3 Mile E of Pittsford
RouteCounty Highway 0
CountyHillsdale County
StateMichigan
Coordinates41.73859, -84.46939
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 protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionNovember 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; action required to protect exposed foundations
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 rating76.5 US tons
Inventory rating45.7 US tons

Structure

Structure typeBox Beam or Girders - Multiple
MaterialPrestressed Concrete
DeckConcrete, precast panels
Main spans1
Design loadHS 20
Structure length60 ft (18.2 m)
Longest span60 ft (18.2 m)
Deck width30 ft (9.1 m)
Roadway width30 ft (9.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic204 (2014)
Projected traffic335 by 2038
Trucks0%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.1 mi (5 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 Hartley Road over Bird Creek built?

It was built in 1966, making it 59 years old in 2025.

What condition is Hartley Road over Bird Creek 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 November 2024.

How much traffic does Hartley Road over Bird Creek carry?

About 204 vehicles per day (2014 count).

How long is Hartley Road over Bird Creek?

The structure is 60 ft (18.2 m) long with a longest span of 60 ft (18.2 m) and a deck 30 ft wide.

Who owns Hartley Road over Bird Creek?

It is owned by the County Highway Agency.