US Bridges

Colfax Street over Brown Ditch

Good

Lake County, Indiana · 00.50 N of 231st Ave · Structure no. 4500229

Built
2014
11 years old
Condition
Good
inspected August 2024
Type
Slab
Concrete Continuous
Length
83 ft
3 main spans
Daily traffic
1,211
2013 count
Owner
County
County Highway Agency

About this bridge

Colfax Street over Brown Ditch is a concrete continuous slab carrying Colfax Street over Brown Ditch in Lake County, Indiana. It was built in 2014, so it is 11 years old, younger 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 7 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 1,211 vehicles a day, roughly 5% of them trucks, projected to reach 1,585 by 2040. The structure is 83 ft (25.4 m) long and 32 ft wide. If it were closed, the detour would be 2.5 mi (4 km).

CarriesColfax Street
CrossesBrown Ditch
Location00.50 N of 231st Ave
RouteCounty Highway 0
StateIndiana
Coordinates41.20626, -87.41008
Functional classRural Major Collector

Condition and inspection

Good

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

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionAugust 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating57.1 US tons
Inventory rating44 US tons

Structure

Structure typeSlab
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHL 93
Structure length83 ft (25.4 m)
Longest span30 ft (9.1 m)
Deck width32 ft (9.9 m)
Roadway width32 ft (9.7 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,211 (2013)
Projected traffic1,585 by 2040
Trucks5%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed2.5 mi (4 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 proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was Colfax Street over Brown Ditch built?

It was built in 2014, making it 11 years old in 2025.

What condition is Colfax Street 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 August 2024.

How much traffic does Colfax Street over Brown Ditch carry?

About 1,211 vehicles per day (2013 count), of which roughly 5% are trucks.

How long is Colfax Street over Brown Ditch?

The structure is 83 ft (25.4 m) long with a longest span of 30 ft (9.1 m) and a deck 32 ft wide.

Who owns Colfax Street over Brown Ditch?

It is owned by the County Highway Agency.