US Bridges

CR 400N over Salt Creek

FairPosted for load

Porter County, Indiana · 00.20 E CR 375 W · Structure no. 6400068

Built
1963
62 years old
Condition
Fair
inspected May 2024
Type
Box Beam or Girders - Multiple
Prestressed Concrete
Length
34 ft
1 main span
Daily traffic
1,040
2018 count
Owner
County
County Highway Agency

About this bridge

CR 400N over Salt Creek is a prestressed concrete box beam or girders - multiple carrying CR 400N over Salt Creek in Porter County, Indiana. It was built in 1963, so it is 62 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 1,040 vehicles a day, roughly 6% of them trucks, projected to reach 1,970 by 2038. The structure is 34 ft (10.5 m) long and 22 ft wide. If it were closed, the detour would be 5 mi (8 km).

Location

Open in Google Maps
CarriesCR 400N
CrossesSalt Creek
Location00.20 E CR 375 W
RouteCounty Highway 176
CountyPorter County
StateIndiana
Coordinates41.49264, -87.13766
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.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Channel and channel protection5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionMay 2024
Inspection intervalevery 24 months
Operating statusPosted for load 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 geometry3: Basically intolerable, requiring high priority of corrective action
Waterway adequacy5: Somewhat better than minimum adequacy to tolerate being left in place as is
Approach roadway alignment6: Equal to present minimum criteria
Operating rating37.5 US tons
Inventory rating22.2 US tons

Structure

Structure typeBox Beam or Girders - Multiple
MaterialPrestressed Concrete
DeckConcrete, precast panels
Main spans1
Design loadUnknown
Structure length34 ft (10.5 m)
Longest span32 ft (9.9 m)
Deck width22 ft (6.8 m)
Roadway width22 ft (6.7 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,040 (2018)
Projected traffic1,970 by 2038
Trucks6%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed5 mi (8 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$1.6 million (2024 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was CR 400N over Salt Creek built?

It was built in 1963, making it 62 years old in 2025.

What condition is CR 400N over Salt 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 May 2024.

How much traffic does CR 400N over Salt Creek carry?

About 1,040 vehicles per day (2018 count), of which roughly 6% are trucks.

How long is CR 400N over Salt Creek?

The structure is 34 ft (10.5 m) long with a longest span of 32 ft (9.9 m) and a deck 22 ft wide.

Who owns CR 400N over Salt Creek?

It is owned by the County Highway Agency.