US Bridges

Michigan Road over Conns Creek

Fair

Shelby County, Indiana · 00.50 W of CR 700 E · Structure no. 7300084

Built
1940
85 years old
Condition
Fair
inspected November 2023
Type
Culvert
Concrete
Length
150 ft
3 main spans
Daily traffic
500
2021 count
Owner
County
County Highway Agency

About this bridge

Michigan Road over Conns Creek is a concrete culvert carrying Michigan Road over Conns Creek in Shelby County, Indiana. It was built in 1940, so it is 85 years old, older than the Indiana average of 46.6 years.

The most recent inspection reported to the Federal Highway Administration rates it in fair condition with a lowest component rating of 5 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 500 vehicles a day, roughly 5% of them trucks, projected to reach 700 by 2041. The structure is 150 ft (45.6 m) long and 25 ft wide. If it were closed, the detour would be 0.6 mi (1 km).

Location

Open in Google Maps
CarriesMichigan Road
CrossesConns Creek
Location00.50 W of CR 700 E
RouteCounty Highway 0
CountyShelby County
StateIndiana
Coordinates39.46491, -85.65474
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
Channel and channel protection5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Culvert5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionNovember 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating35.9 US tons
Inventory rating27.9 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckNot applicable
Main spans3
Design loadUnknown
Structure length150 ft (45.6 m)
Longest span45 ft (13.7 m)
Deck width25 ft (7.5 m)
Roadway width22 ft (6.7 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic500 (2021)
Projected traffic700 by 2041
Trucks5%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed0.6 mi (1 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

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

Frequently asked questions

When was Michigan Road over Conns Creek built?

It was built in 1940, making it 85 years old in 2025.

What condition is Michigan Road over Conns 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 2023.

How much traffic does Michigan Road over Conns Creek carry?

About 500 vehicles per day (2021 count), of which roughly 5% are trucks.

How long is Michigan Road over Conns Creek?

The structure is 150 ft (45.6 m) long with a longest span of 45 ft (13.7 m) and a deck 25 ft wide.

Who owns Michigan Road over Conns Creek?

It is owned by the County Highway Agency.