US Bridges

SR 8 over Cobbs Creek

Fair

Porter County, Indiana · 00.54 E US 231 · Structure no. 002110

Built
1936
89 years old, rebuilt 2015
Condition
Fair
inspected December 2024
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
35 ft
1 main span
Daily traffic
4,633
2022 count
Owner
State
State Highway Agency

About this bridge

SR 8 over Cobbs Creek is a prestressed concrete stringer/multi-beam or girder carrying SR 8 over Cobbs Creek in Porter County, Indiana. It was built in 1936 and reconstructed in 2015, so it is 89 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 4,633 vehicles a day, roughly 23% of them trucks, projected to reach 5,060 by 2035. The structure is 35 ft (10.6 m) long and 46 ft wide. If it were closed, the detour would be 5.6 mi (9 km).

Location

Open in Google Maps
CarriesSR 8
CrossesCobbs Creek
Location00.54 E US 231
RouteState Highway 8
CountyPorter County
StateIndiana
Coordinates41.31824, -87.1897
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.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionDecember 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry6: Equal to present minimum criteria
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating39.7 US tons
Inventory rating21.4 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans1
Design loadHS 20 + Mod
Structure length35 ft (10.6 m)
Longest span34 ft (10.3 m)
Deck width46 ft (14.1 m)
Roadway width43 ft (13.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic4,633 (2022)
Projected traffic5,060 by 2035
Trucks23%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed5.6 mi (9 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerState Highway Agency
Maintained byState Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was SR 8 over Cobbs Creek built?

It was built in 1936, making it 89 years old in 2025. It was reconstructed in 2015.

What condition is SR 8 over Cobbs 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 December 2024.

How much traffic does SR 8 over Cobbs Creek carry?

About 4,633 vehicles per day (2022 count), of which roughly 23% are trucks.

How long is SR 8 over Cobbs Creek?

The structure is 35 ft (10.6 m) long with a longest span of 34 ft (10.3 m) and a deck 46 ft wide.

Who owns SR 8 over Cobbs Creek?

It is owned by the State Highway Agency.