US Bridges

US 41 SB over Brown Ditch

Good

Lake County, Indiana · 03.54 S SR 2 · Structure no. 015600

Built
1954
71 years old, rebuilt 2022
Condition
Good
inspected January 2023
Type
Slab
Concrete Continuous
Length
89 ft
3 main spans
Daily traffic
7,198
2021 count
Owner
State
State Highway Agency

About this bridge

US 41 SB over Brown Ditch is a concrete continuous slab carrying US 41 SB over Brown Ditch in Lake County, Indiana. It was built in 1954 and reconstructed in 2022, so it is 71 years old, older than the Indiana average of 46.6 years.

The most recent inspection reported to the Federal Highway Administration rates it in good condition with a lowest component rating of 8 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 7,198 vehicles a day, roughly 41% of them trucks, projected to reach 7,640 by 2030. The structure is 89 ft (27.1 m) long and 45 ft wide. If it were closed, the detour would be 0.6 mi (1 km).

CarriesUS 41 SB
CrossesBrown Ditch
Location03.54 S SR 2
RouteU.S. Route 41
StateIndiana
Coordinates41.20182, -87.46106
Functional classRural Principal Arterial - Other

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Deck9 ExcellentNo problems noted.
Superstructure9 ExcellentNo problems noted.
Substructure8 Very GoodNo problems noted.
Channel and channel protection7 GoodSome minor problems.
Last inspectionJanuary 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation8: Equal to present desirable criteria
Deck geometry7: Better than present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating71.1 US tons
Inventory rating55 US tons

Structure

Structure typeSlab
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHL 93
Structure length89 ft (27.1 m)
Longest span38 ft (11.5 m)
Deck width45 ft (13.7 m)
Roadway width41 ft (12.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic7,198 (2021)
Projected traffic7,640 by 2030
Trucks41%
Lanes on structure2
Traffic directionOne-way traffic
CarriesHighway
CrossesWaterway
Detour if closed0.6 mi (1 km)
TollOn a free road
National Highway SystemYes

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 US 41 SB over Brown Ditch built?

It was built in 1954, making it 71 years old in 2025. It was reconstructed in 2022.

What condition is US 41 SB over Brown Ditch in?

The National Bridge Inventory rates it in good condition. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted. The last reported inspection was in January 2023.

How much traffic does US 41 SB over Brown Ditch carry?

About 7,198 vehicles per day (2021 count), of which roughly 41% are trucks.

How long is US 41 SB over Brown Ditch?

The structure is 89 ft (27.1 m) long with a longest span of 38 ft (11.5 m) and a deck 45 ft wide.

Who owns US 41 SB over Brown Ditch?

It is owned by the State Highway Agency.