US Bridges

Walnut RD over Big Walnut Creek

Fair

Putnam County, Indiana · 00.70 E of CR 300 E · Structure no. 6700098

Built
1960
65 years old
Condition
Fair
inspected March 2023
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
316 ft
5 main spans
Daily traffic
2,960
2023 count
Owner
County
County Highway Agency

About this bridge

Walnut RD over Big Walnut Creek is a prestressed concrete stringer/multi-beam or girder carrying Walnut RD over Big Walnut Creek in Putnam County, Indiana. It was built in 1960, so it is 65 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 2,960 vehicles a day, roughly 6% of them trucks, projected to reach 4,060 by 2043. The structure is 316 ft (96.3 m) long and 28 ft wide. If it were closed, the detour would be 2.5 mi (4 km).

Location

Open in Google Maps
CarriesWalnut RD
CrossesBig Walnut Creek
Location00.70 E of CR 300 E
RouteCounty Highway 0
CountyPutnam County
StateIndiana
Coordinates39.64505, -86.88559
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.
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 inspectionMarch 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation6: Equal to present minimum criteria
Deck geometry2: Basically intolerable, requiring high priority of replacement
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating82.2 US tons
Inventory rating49.3 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans5
Design loadHS 20
Structure length316 ft (96.3 m)
Longest span63 ft (19.2 m)
Deck width28 ft (8.5 m)
Roadway width24 ft (7.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic2,960 (2023)
Projected traffic4,060 by 2043
Trucks6%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed2.5 mi (4 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 proposedRehabilitation because of general structure deterioration or inadequate strength
Estimated improvement cost$1.1 million (2023 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was Walnut RD over Big Walnut Creek built?

It was built in 1960, making it 65 years old in 2025.

What condition is Walnut RD over Big Walnut 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 Walnut RD over Big Walnut Creek carry?

About 2,960 vehicles per day (2023 count), of which roughly 6% are trucks.

How long is Walnut RD over Big Walnut Creek?

The structure is 316 ft (96.3 m) long with a longest span of 63 ft (19.2 m) and a deck 28 ft wide.

Who owns Walnut RD over Big Walnut Creek?

It is owned by the County Highway Agency.