US Bridges

State Line Road over Singleton Ditch

Fair

Lake County, Indiana · 00.00 Int of 236th Ave · Structure no. 4500035

Built
1991
34 years old
Condition
Fair
inspected November 2022
Type
Box Beam or Girders - Multiple
Prestressed Concrete
Length
97 ft
3 main spans
Daily traffic
175
2017 count
Owner
County
County Highway Agency

About this bridge

State Line Road over Singleton Ditch is a prestressed concrete box beam or girders - multiple carrying State Line Road over Singleton Ditch in Lake County, Indiana. It was built in 1991, so it is 34 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 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 175 vehicles a day, roughly 14% of them trucks, projected to reach 189 by 2032. The structure is 97 ft (29.5 m) long and 24 ft wide. If it were closed, the detour would be 5 mi (8 km).

Location

Open in Google Maps
CarriesState Line Road
CrossesSingleton Ditch
Location00.00 Int of 236th Ave
RouteCounty Highway 0
CountyLake County
StateIndiana
Coordinates41.18944, -87.52652
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.
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 protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionNovember 2022
Inspection intervalevery 48 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 geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating49.1 US tons
Inventory rating35.9 US tons

Structure

Structure typeBox Beam or Girders - Multiple
MaterialPrestressed Concrete
DeckConcrete, precast panels
Main spans3
Design loadHS 20
Structure length97 ft (29.5 m)
Longest span51 ft (15.6 m)
Deck width24 ft (7.3 m)
Roadway width24 ft (7.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic175 (2017)
Projected traffic189 by 2032
Trucks14%
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 proposedOther structural work, including hydraulic replacements
Estimated improvement cost$104,000 (2023 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was State Line Road over Singleton Ditch built?

It was built in 1991, making it 34 years old in 2025.

What condition is State Line Road over Singleton 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 November 2022.

How much traffic does State Line Road over Singleton Ditch carry?

About 175 vehicles per day (2017 count), of which roughly 14% are trucks.

How long is State Line Road over Singleton Ditch?

The structure is 97 ft (29.5 m) long with a longest span of 51 ft (15.6 m) and a deck 24 ft wide.

Who owns State Line Road over Singleton Ditch?

It is owned by the County Highway Agency.