US Bridges

Cottage Ave over Rock Run Creek

Poor

Elkhart County, Indiana · 00.10 N of SR 4 · Structure no. 2000173

Built
1978
47 years old
Condition
Poor
inspected August 2024
Type
Box Beam or Girders - Multiple
Prestressed Concrete
Length
50 ft
1 main span
Daily traffic
1,531
2019 count
Owner
County
County Highway Agency

About this bridge

Cottage Ave over Rock Run Creek is a prestressed concrete box beam or girders - multiple carrying Cottage Ave over Rock Run Creek in Elkhart County, Indiana. It was built in 1978, so it is 47 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 1,531 vehicles a day, roughly 5% of them trucks, projected to reach 2,637 by 2039. The structure is 50 ft (15.2 m) long and 34 ft wide. If it were closed, the detour would be 0.6 mi (1 km).

CarriesCottage Ave
CrossesRock Run Creek
Location00.10 N of SR 4
RouteCity Street 0
StateIndiana
Coordinates41.58848, -85.82895
Functional classUrban Local

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
Deck7 GoodSome minor problems.
Superstructure4 PoorAdvanced section loss, deterioration, spalling or scour.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionAugust 2024
Inspection intervalevery 12 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation4: Meets minimum tolerable limits to be left in place as is
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating38.3 US tons
Inventory rating29.7 US tons

Structure

MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans1
Design loadUnknown
Structure length50 ft (15.2 m)
Longest span45 ft (13.7 m)
Deck width34 ft (10.5 m)
Roadway width25 ft (7.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,531 (2019)
Projected traffic2,637 by 2039
Trucks5%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
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$1.9 million (2024 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was Cottage Ave over Rock Run Creek built?

It was built in 1978, making it 47 years old in 2025.

What condition is Cottage Ave over Rock Run Creek 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 Cottage Ave over Rock Run Creek carry?

About 1,531 vehicles per day (2019 count), of which roughly 5% are trucks.

How long is Cottage Ave over Rock Run Creek?

The structure is 50 ft (15.2 m) long with a longest span of 45 ft (13.7 m) and a deck 34 ft wide.

Who owns Cottage Ave over Rock Run Creek?

It is owned by the County Highway Agency.