US Bridges

CR 550 South over Herriotts Creek

PoorPosted for load

Johnson County, Indiana · 0.60 W of Mauxferry RD · Structure no. 4100018

Built
1984
41 years old
Condition
Poor
inspected June 2024
Type
Box Beam or Girders - Multiple
Prestressed Concrete
Length
39 ft
1 main span
Daily traffic
88
2017 count
Owner
County
County Highway Agency

About this bridge

CR 550 South over Herriotts Creek is a prestressed concrete box beam or girders - multiple carrying CR 550 South over Herriotts Creek in Johnson County, Indiana. It was built in 1984, so it is 41 years old, younger 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. Its operating status is: posted for load restriction.

It carries about 88 vehicles a day, roughly 4% of them trucks, projected to reach 242 by 2037. The structure is 39 ft (12 m) long and 24 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

CarriesCR 550 South
CrossesHerriotts Creek
Location0.60 W of Mauxferry RD
RouteCounty Highway 78
StateIndiana
Coordinates39.39894, -86.03713
Functional classRural 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
Deck4 PoorAdvanced section loss, deterioration, spalling or scour.
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 inspectionJune 2024
Inspection intervalevery 12 months
Operating statusPosted for load restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation4: Meets minimum tolerable limits to be left in place as is
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment3: Basically intolerable, requiring high priority of corrective action
Operating rating36.8 US tons
Inventory rating22 US tons

Structure

MaterialPrestressed Concrete
DeckConcrete, precast panels
Main spans1
Design loadUnknown
Structure length39 ft (12 m)
Longest span36 ft (10.9 m)
Deck width24 ft (7.3 m)
Roadway width24 ft (7.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic88 (2017)
Projected traffic242 by 2037
Trucks4%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.9 mi (3 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 proposedRehabilitation because of general structure deterioration or inadequate strength
Estimated improvement cost$800,000 (2024 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was CR 550 South over Herriotts Creek built?

It was built in 1984, making it 41 years old in 2025.

What condition is CR 550 South over Herriotts 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 June 2024.

How much traffic does CR 550 South over Herriotts Creek carry?

About 88 vehicles per day (2017 count), of which roughly 4% are trucks.

How long is CR 550 South over Herriotts Creek?

The structure is 39 ft (12 m) long with a longest span of 36 ft (10.9 m) and a deck 24 ft wide.

Who owns CR 550 South over Herriotts Creek?

It is owned by the County Highway Agency.