US Bridges

SR 66 over Knobbs Creek

Fair

Perry County, Indiana · 00.12 E SR 70 · Structure no. 023620

Built
1965
60 years old, rebuilt 2002
Condition
Fair
inspected March 2023
Type
Stringer/Multi-beam or Girder
Prestressed Concrete Continuous
Length
148 ft
3 main spans
Daily traffic
269
2004 count
Owner
State
State Highway Agency

About this bridge

SR 66 over Knobbs Creek is a prestressed concrete continuous stringer/multi-beam or girder carrying SR 66 over Knobbs Creek in Perry County, Indiana. It was built in 1965 and reconstructed in 2002, so it is 60 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 269 vehicles a day, roughly 10% of them trucks, projected to reach 448 by 2032. The structure is 148 ft (45.1 m) long and 40 ft wide. If it were closed, the detour would be 5.6 mi (9 km).

Location

Open in Google Maps
CarriesSR 66
CrossesKnobbs Creek
Location00.12 E SR 70
RouteState Highway 66
CountyPerry County
StateIndiana
Coordinates38.02666, -86.52675
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.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure7 GoodSome minor problems.
Channel and channel protection7 GoodSome minor problems.
Last inspectionMarch 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry9: Superior to present desirable criteria
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment3: Basically intolerable, requiring high priority of corrective action
Operating rating49.6 US tons
Inventory rating38.3 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length148 ft (45.1 m)
Longest span48 ft (14.7 m)
Deck width40 ft (12.3 m)
Roadway width37 ft (11.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic269 (2004)
Projected traffic448 by 2032
Trucks10%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed5.6 mi (9 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 66 over Knobbs Creek built?

It was built in 1965, making it 60 years old in 2025. It was reconstructed in 2002.

What condition is SR 66 over Knobbs 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 March 2023.

How much traffic does SR 66 over Knobbs Creek carry?

About 269 vehicles per day (2004 count), of which roughly 10% are trucks.

How long is SR 66 over Knobbs Creek?

The structure is 148 ft (45.1 m) long with a longest span of 48 ft (14.7 m) and a deck 40 ft wide.

Who owns SR 66 over Knobbs Creek?

It is owned by the State Highway Agency.