US Bridges

SR 8 over Grassmere Ditch

Fair

Porter County, Indiana · 02.03 W US 421 · Structure no. 002160

Built
1994
31 years old, rebuilt 2020
Condition
Fair
inspected December 2024
Type
Slab
Concrete Continuous
Length
79 ft
3 main spans
Daily traffic
2,889
2022 count
Owner
State
State Highway Agency

About this bridge

SR 8 over Grassmere Ditch is a concrete continuous slab carrying SR 8 over Grassmere Ditch in Porter County, Indiana. It was built in 1994 and reconstructed in 2020, so it is 31 years old, younger 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 2,889 vehicles a day, roughly 28% of them trucks, projected to reach 3,346 by 2041. The structure is 79 ft (24 m) long and 36 ft wide. If it were closed, the detour would be 9.9 mi (16 km).

Location

Open in Google Maps
CarriesSR 8
CrossesGrassmere Ditch
Location02.03 W US 421
RouteState Highway 8
CountyPorter County
StateIndiana
Coordinates41.31833, -86.93166
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.
Substructure7 GoodSome minor problems.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionDecember 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating44 US tons
Inventory rating34 US tons

Structure

Structure typeSlab
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length79 ft (24 m)
Longest span30 ft (9.2 m)
Deck width36 ft (11 m)
Roadway width33 ft (10.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic2,889 (2022)
Projected traffic3,346 by 2041
Trucks28%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed9.9 mi (16 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 Grassmere Ditch built?

It was built in 1994, making it 31 years old in 2025. It was reconstructed in 2020.

What condition is SR 8 over Grassmere Ditch 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 Grassmere Ditch carry?

About 2,889 vehicles per day (2022 count), of which roughly 28% are trucks.

How long is SR 8 over Grassmere Ditch?

The structure is 79 ft (24 m) long with a longest span of 30 ft (9.2 m) and a deck 36 ft wide.

Who owns SR 8 over Grassmere Ditch?

It is owned by the State Highway Agency.