US Bridges

Blacks Mill Road over Mississinewa River

Good

Delaware County, Indiana · 00.40 E of Granville RD · Structure no. 1800603

Built
2011
14 years old
Condition
Good
inspected November 2024
Type
Stringer/Multi-beam or Girder
Prestressed Concrete Continuous
Length
182 ft
3 main spans
Daily traffic
90
2023 count
Owner
County
County Highway Agency

About this bridge

Blacks Mill Road over Mississinewa River is a prestressed concrete continuous stringer/multi-beam or girder carrying Blacks Mill Road over Mississinewa River in Delaware County, Indiana. It was built in 2011, so it is 14 years old, younger than the Indiana average of 46.6 years.

The most recent inspection reported to the Federal Highway Administration rates it in good condition with a lowest component rating of 7 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 90 vehicles a day, roughly 1% of them trucks, projected to reach 150 by 2043. The structure is 182 ft (55.4 m) long and 25 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

CarriesBlacks Mill Road
CrossesMississinewa River
Location00.40 E of Granville RD
RouteCounty Highway 72
StateIndiana
Coordinates40.29177, -85.31278
Functional classRural Local

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Channel and channel protection7 GoodSome minor problems.
Last inspectionNovember 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation7: Better than present minimum criteria
Deck geometry6: Equal to present minimum criteria
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating64.6 US tons
Inventory rating48.2 US tons

Structure

MaterialPrestressed Concrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHL 93
Structure length182 ft (55.4 m)
Longest span60 ft (18.2 m)
Deck width25 ft (7.6 m)
Roadway width24 ft (7.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic90 (2023)
Projected traffic150 by 2043
Trucks1%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.9 mi (3 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 Blacks Mill Road over Mississinewa River built?

It was built in 2011, making it 14 years old in 2025.

What condition is Blacks Mill Road over Mississinewa River in?

The National Bridge Inventory rates it in good condition. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted. The last reported inspection was in November 2024.

How much traffic does Blacks Mill Road over Mississinewa River carry?

About 90 vehicles per day (2023 count), of which roughly 1% are trucks.

How long is Blacks Mill Road over Mississinewa River?

The structure is 182 ft (55.4 m) long with a longest span of 60 ft (18.2 m) and a deck 25 ft wide.

Who owns Blacks Mill Road over Mississinewa River?

It is owned by the County Highway Agency.