US Bridges

Ackerman RD over Mill Creek

FairPosted for load

Dubois County, Indiana · 00.90 W of Portersville R · Structure no. 1900004

Built
1930
95 years old, rebuilt 1986
Condition
Fair
inspected February 2024
Type
Stringer/Multi-beam or Girder
Steel
Length
32 ft
1 main span
Daily traffic
114
2012 count
Owner
County
County Highway Agency

About this bridge

Ackerman RD over Mill Creek is a steel stringer/multi-beam or girder carrying Ackerman RD over Mill Creek in Dubois County, Indiana. It was built in 1930 and reconstructed in 1986, so it is 95 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 6 out of 9. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound. Its operating status is: posted for load restriction.

It carries about 114 vehicles a day, roughly 5% of them trucks, projected to reach 135 by 2032. The structure is 32 ft (9.9 m) long and 23 ft wide. If it were closed, the detour would be 123.7 mi (199 km).

CarriesAckerman RD
CrossesMill Creek
Location00.90 W of Portersville R
RouteCounty Highway 0
StateIndiana
Coordinates38.42955, -86.96475
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
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionFebruary 2024
Inspection intervalevery 24 months
Operating statusPosted for load restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation6: Equal to present minimum criteria
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 rating40.3 US tons
Inventory rating24.1 US tons

Structure

MaterialSteel
DeckConcrete, cast-in-place
Main spans1
Design loadUnknown
Structure length32 ft (9.9 m)
Longest span31 ft (9.3 m)
Deck width23 ft (7 m)
Roadway width22 ft (6.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic114 (2012)
Projected traffic135 by 2032
Trucks5%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed123.7 mi (199 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 Ackerman RD over Mill Creek built?

It was built in 1930, making it 95 years old in 2025. It was reconstructed in 1986.

What condition is Ackerman RD over Mill 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 February 2024.

How much traffic does Ackerman RD over Mill Creek carry?

About 114 vehicles per day (2012 count), of which roughly 5% are trucks.

How long is Ackerman RD over Mill Creek?

The structure is 32 ft (9.9 m) long with a longest span of 31 ft (9.3 m) and a deck 23 ft wide.

Who owns Ackerman RD over Mill Creek?

It is owned by the County Highway Agency.