US Bridges

CR 450 S over Big Four RR

FairPosted for load

Gibson County, Indiana · 00.20 E of SR 57 · Structure no. 2600272

Built
1930
95 years old, rebuilt 1985
Condition
Fair
inspected March 2024
Type
Stringer/Multi-beam or Girder
Wood or Timber
Length
140 ft
6 main spans
Daily traffic
420
2021 count
Owner
County
County Highway Agency

About this bridge

CR 450 S over Big Four RR is a wood or timber stringer/multi-beam or girder carrying CR 450 S over Big Four RR in Gibson County, Indiana. It was built in 1930 and reconstructed in 1985, so it is 95 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 420 vehicles a day, roughly 7% of them trucks, projected to reach 590 by 2041. The structure is 140 ft (42.7 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 450 S
CrossesBig Four RR
Location00.20 E of SR 57
RouteCounty Highway 76
CountyGibson County
StateIndiana
Coordinates38.28974, -87.37344
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
Deck7 GoodSome minor problems.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionMarch 2024
Inspection intervalevery 24 months
Operating statusPosted for load restriction
ScourBridge not over waterway
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
Approach roadway alignment6: Equal to present minimum criteria
Operating rating29.1 US tons
Inventory rating22.5 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialWood or Timber
DeckWood or timber
Main spans6
Design loadHS 20
Structure length140 ft (42.7 m)
Longest span23 ft (7 m)
Deck width23 ft (7 m)
Roadway width21 ft (6.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic420 (2021)
Projected traffic590 by 2041
Trucks7%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesRailroad
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$1.7 million (2024 estimate)
NavigationNot applicable (no waterway)

Frequently asked questions

When was CR 450 S over Big Four RR built?

It was built in 1930, making it 95 years old in 2025. It was reconstructed in 1985.

What condition is CR 450 S over Big Four RR 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 2024.

How much traffic does CR 450 S over Big Four RR carry?

About 420 vehicles per day (2021 count), of which roughly 7% are trucks.

How long is CR 450 S over Big Four RR?

The structure is 140 ft (42.7 m) long with a longest span of 23 ft (7 m) and a deck 23 ft wide.

Who owns CR 450 S over Big Four RR?

It is owned by the County Highway Agency.