US Bridges

CR 450N over Little Walnut Creek

FairPosted for load

Putnam County, Indiana · 00.10 W of CR 700 W · Structure no. 6700086

Built
1922
103 years old
Condition
Fair
inspected March 2023
Type
Truss - Thru
Wood or Timber
Length
84 ft
1 main span
Daily traffic
190
2023 count
Owner
County
County Highway Agency

About this bridge

CR 450N over Little Walnut Creek is a wood or timber truss - thru carrying CR 450N over Little Walnut Creek in Putnam County, Indiana. It was built in 1922, so it is 103 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. Its operating status is: posted for load restriction.

It carries about 190 vehicles a day, roughly 5% of them trucks, projected to reach 260 by 2043. The structure is 84 ft (25.6 m) long and 16 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Location

Open in Google Maps
CarriesCR 450N
CrossesLittle Walnut Creek
Location00.10 W of CR 700 W
RouteCounty Highway 224
CountyPutnam County
StateIndiana
Coordinates39.7274, -86.97627
Functional classRural Local

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.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionMarch 2023
Inspection intervalevery 24 months
Operating statusPosted for load restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation2: Basically intolerable, requiring high priority of replacement
Deck geometry2: Basically intolerable, requiring high priority of replacement
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating6 US tons
Inventory rating6 US tons

Structure

Structure typeTruss - Thru
MaterialWood or Timber
DeckWood or timber
Main spans1
Design loadUnknown
Structure length84 ft (25.6 m)
Longest span77 ft (23.4 m)
Deck width16 ft (5 m)
Roadway width14 ft (4.3 m)
Vertical clearance over deck13 ft (3.9 m)

Traffic and service

Average daily traffic190 (2023)
Projected traffic260 by 2043
Trucks5%
Lanes on structure1
Traffic directionOne-lane bridge for two-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 statusListed on the National Register of Historic Places
Work proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost$2.8 million (2023 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was CR 450N over Little Walnut Creek built?

It was built in 1922, making it 103 years old in 2025.

What condition is CR 450N over Little 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 CR 450N over Little Walnut Creek carry?

About 190 vehicles per day (2023 count), of which roughly 5% are trucks.

How long is CR 450N over Little Walnut Creek?

The structure is 84 ft (25.6 m) long with a longest span of 77 ft (23.4 m) and a deck 16 ft wide.

Who owns CR 450N over Little Walnut Creek?

It is owned by the County Highway Agency.