US Bridges

US 231 over Mill Creek

Fair

Owen County, Indiana · 04.92 S SR 42 · Structure no. 015970

Built
1967
58 years old, rebuilt 1992
Condition
Fair
inspected April 2023
Type
Stringer/Multi-beam or Girder
Prestressed Concrete Continuous
Length
200 ft
3 main spans
Daily traffic
5,336
2021 count
Owner
State
State Highway Agency

About this bridge

US 231 over Mill Creek is a prestressed concrete continuous stringer/multi-beam or girder carrying US 231 over Mill Creek in Owen County, Indiana. It was built in 1967 and reconstructed in 1992, so it is 58 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.

It carries about 5,336 vehicles a day, roughly 11% of them trucks, projected to reach 7,519 by 2033. The structure is 200 ft (60.9 m) long and 36 ft wide. If it were closed, the detour would be 31.7 mi (51 km).

Location

Open in Google Maps
CarriesUS 231
CrossesMill Creek
Location04.92 S SR 42
RouteU.S. Route 231
CountyOwen County
StateIndiana
Coordinates39.4336, -86.76332
Functional classRural Principal Arterial - Other

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.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionApril 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
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 adequacy9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating29.3 US tons
Inventory rating22.5 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length200 ft (60.9 m)
Longest span66 ft (20.2 m)
Deck width36 ft (11.1 m)
Roadway width33 ft (10.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic5,336 (2021)
Projected traffic7,519 by 2033
Trucks11%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed31.7 mi (51 km)
TollOn a free road
National Highway SystemYes
Strategic Highway NetworkSTRAHNET connector

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—
NavigationNo navigation control on waterway

Frequently asked questions

When was US 231 over Mill Creek built?

It was built in 1967, making it 58 years old in 2025. It was reconstructed in 1992.

What condition is US 231 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 April 2023.

How much traffic does US 231 over Mill Creek carry?

About 5,336 vehicles per day (2021 count), of which roughly 11% are trucks.

How long is US 231 over Mill Creek?

The structure is 200 ft (60.9 m) long with a longest span of 66 ft (20.2 m) and a deck 36 ft wide.

Who owns US 231 over Mill Creek?

It is owned by the State Highway Agency.