US Bridges

CR 775E over Mill Creek

Fair

Putnam County, Indiana · 00.80 N of SR 42 · Structure no. 6700194

Built
1971
54 years old
Condition
Fair
inspected April 2023
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
262 ft
5 main spans
Daily traffic
430
2023 count
Owner
County
County Highway Agency

About this bridge

CR 775E over Mill Creek is a prestressed concrete stringer/multi-beam or girder carrying CR 775E over Mill Creek in Putnam County, Indiana. It was built in 1971, so it is 54 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 430 vehicles a day, roughly 4% of them trucks, projected to reach 590 by 2043. The structure is 262 ft (79.8 m) long and 30 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

CarriesCR 775E
CrossesMill Creek
Location00.80 N of SR 42
RouteCounty Highway 79
StateIndiana
Coordinates39.50571, -86.71109
Functional classRural Minor 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
Deck5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
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 inspectionApril 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating50.6 US tons
Inventory rating29.4 US tons

Structure

MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans5
Design loadHS 20
Structure length262 ft (79.8 m)
Longest span52 ft (15.8 m)
Deck width30 ft (9.2 m)
Roadway width28 ft (8.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic430 (2023)
Projected traffic590 by 2043
Trucks4%
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 proposedOther structural work, including hydraulic replacements
Estimated improvement cost—
NavigationNavigation control on waterway (bridge permit required)

Frequently asked questions

When was CR 775E over Mill Creek built?

It was built in 1971, making it 54 years old in 2025.

What condition is CR 775E 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 CR 775E over Mill Creek carry?

About 430 vehicles per day (2023 count), of which roughly 4% are trucks.

How long is CR 775E over Mill Creek?

The structure is 262 ft (79.8 m) long with a longest span of 52 ft (15.8 m) and a deck 30 ft wide.

Who owns CR 775E over Mill Creek?

It is owned by the County Highway Agency.