US Bridges

CR 300N over Miller Creek

Fair

Putnam County, Indiana · 00.20 E of CR 550 E · Structure no. 6700055

Built
1920
105 years old, rebuilt 1979
Condition
Fair
inspected March 2023
Type
Box Beam or Girders - Multiple
Prestressed Concrete
Length
48 ft
1 main span
Daily traffic
420
2023 count
Owner
County
County Highway Agency

About this bridge

CR 300N over Miller Creek is a prestressed concrete box beam or girders - multiple carrying CR 300N over Miller Creek in Putnam County, Indiana. It was built in 1920 and reconstructed in 1979, so it is 105 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 420 vehicles a day, roughly 3% of them trucks, projected to reach 580 by 2043. The structure is 48 ft (14.7 m) long and 23 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Location

Open in Google Maps
CarriesCR 300N
CrossesMiller Creek
Location00.20 E of CR 550 E
RouteCounty Highway 214
CountyPutnam County
StateIndiana
Coordinates39.70234, -86.75111
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
Deck5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
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 protection7 GoodSome minor problems.
Last inspectionMarch 2023
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 geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating66.5 US tons
Inventory rating39.8 US tons

Structure

Structure typeBox Beam or Girders - Multiple
MaterialPrestressed Concrete
DeckConcrete, precast panels
Main spans1
Design loadUnknown
Structure length48 ft (14.7 m)
Longest span46 ft (13.9 m)
Deck width23 ft (6.9 m)
Roadway width22 ft (6.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic420 (2023)
Projected traffic580 by 2043
Trucks3%
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 proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost$2.7 million (2023 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was CR 300N over Miller Creek built?

It was built in 1920, making it 105 years old in 2025. It was reconstructed in 1979.

What condition is CR 300N over Miller 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 300N over Miller Creek carry?

About 420 vehicles per day (2023 count), of which roughly 3% are trucks.

How long is CR 300N over Miller Creek?

The structure is 48 ft (14.7 m) long with a longest span of 46 ft (13.9 m) and a deck 23 ft wide.

Who owns CR 300N over Miller Creek?

It is owned by the County Highway Agency.