US Bridges

Colorado Street over Niles Ditch

Poor

Lake County, Indiana · 00.70 S of 101st Ave · Structure no. 4500087

Built
1970
55 years old
Condition
Poor
inspected August 2024
Type
Box Beam or Girders - Multiple
Prestressed Concrete
Length
35 ft
1 main span
Daily traffic
4,365
2018 count
Owner
County
County Highway Agency

About this bridge

Colorado Street over Niles Ditch is a prestressed concrete box beam or girders - multiple carrying Colorado Street over Niles Ditch in Lake County, Indiana. It was built in 1970, so it is 55 years old, older than the Indiana average of 46.6 years.

The most recent inspection reported to the Federal Highway Administration rates it in poor condition with a lowest component rating of 4 out of 9. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.

It carries about 4,365 vehicles a day, roughly 1% of them trucks, projected to reach 5,327 by 2038. The structure is 35 ft (10.8 m) long and 26 ft wide. If it were closed, the detour would be 0.6 mi (1 km).

CarriesColorado Street
CrossesNiles Ditch
Location00.70 S of 101st Ave
RouteCounty Highway 0
StateIndiana
Coordinates41.4236, -87.29675
Functional classUrban Collector

Condition and inspection

Poor

The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.

ComponentRatingMeaning
Deck5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure4 PoorAdvanced section loss, deterioration, spalling or scour.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionAugust 2024
Inspection intervalevery 12 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation4: Meets minimum tolerable limits to be left in place as is
Deck geometry2: Basically intolerable, requiring high priority of replacement
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating49.2 US tons
Inventory rating29.4 US tons

Structure

MaterialPrestressed Concrete
DeckConcrete, precast panels
Main spans1
Design loadUnknown
Structure length35 ft (10.8 m)
Longest span34 ft (10.5 m)
Deck width26 ft (8 m)
Roadway width25 ft (7.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic4,365 (2018)
Projected traffic5,327 by 2038
Trucks1%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed0.6 mi (1 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 proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost$828,000 (2024 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was Colorado Street over Niles Ditch built?

It was built in 1970, making it 55 years old in 2025.

What condition is Colorado Street over Niles Ditch in?

The National Bridge Inventory rates it in poor condition. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions. The last reported inspection was in August 2024.

How much traffic does Colorado Street over Niles Ditch carry?

About 4,365 vehicles per day (2018 count), of which roughly 1% are trucks.

How long is Colorado Street over Niles Ditch?

The structure is 35 ft (10.8 m) long with a longest span of 34 ft (10.5 m) and a deck 26 ft wide.

Who owns Colorado Street over Niles Ditch?

It is owned by the County Highway Agency.