US Bridges

SR 64 over Flat Creek

Fair

Dubois County, Indiana · 02.13 E SR 162 · Structure no. 023020

Built
1935
90 years old, rebuilt 1980
Condition
Fair
inspected December 2024
Type
Box Beam or Girders - Multiple
Prestressed Concrete
Length
88 ft
1 main span
Daily traffic
5,622
2004 count
Owner
State
State Highway Agency

About this bridge

SR 64 over Flat Creek is a prestressed concrete box beam or girders - multiple carrying SR 64 over Flat Creek in Dubois County, Indiana. It was built in 1935 and reconstructed in 1980, so it is 90 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 5,622 vehicles a day, roughly 10% of them trucks, projected to reach 9,333 by 2030. The structure is 88 ft (26.8 m) long and 33 ft wide. If it were closed, the detour would be 5 mi (8 km).

Location

Open in Google Maps
CarriesSR 64
CrossesFlat Creek
Location02.13 E SR 162
RouteState Highway 64
CountyDubois County
StateIndiana
Coordinates38.31004, -86.83383
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
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
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 inspectionDecember 2024
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 geometry3: Basically intolerable, requiring high priority of corrective action
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating59.6 US tons
Inventory rating30 US tons

Structure

Structure typeBox Beam or Girders - Multiple
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans1
Design loadH 20
Structure length88 ft (26.8 m)
Longest span82 ft (25 m)
Deck width33 ft (10.1 m)
Roadway width31 ft (9.6 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic5,622 (2004)
Projected traffic9,333 by 2030
Trucks10%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed5 mi (8 km)
TollOn a free road
National Highway SystemNo

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 SR 64 over Flat Creek built?

It was built in 1935, making it 90 years old in 2025. It was reconstructed in 1980.

What condition is SR 64 over Flat 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 December 2024.

How much traffic does SR 64 over Flat Creek carry?

About 5,622 vehicles per day (2004 count), of which roughly 10% are trucks.

How long is SR 64 over Flat Creek?

The structure is 88 ft (26.8 m) long with a longest span of 82 ft (25 m) and a deck 33 ft wide.

Who owns SR 64 over Flat Creek?

It is owned by the State Highway Agency.