US Bridges

CR 550 W over Little Turtle Creek

Fair

Sullivan County, Indiana · 00.25 N of CR 400 S · Structure no. 7700063

Built
1989
36 years old
Condition
Fair
inspected August 2023
Type
Other
Steel
Length
85 ft
1 main span
Daily traffic
110
2011 count
Owner
County
County Highway Agency

About this bridge

CR 550 W over Little Turtle Creek is a steel other carrying CR 550 W over Little Turtle Creek in Sullivan County, Indiana. It was built in 1989, so it is 36 years old, younger than the Indiana average of 46.6 years.

The most recent inspection reported to the Federal Highway Administration rates it in fair condition with a lowest component rating of 5 out of 9. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

It carries about 110 vehicles a day, roughly 2% of them trucks, projected to reach 130 by 2031. The structure is 85 ft (25.9 m) long and 19 ft wide. If it were closed, the detour would be 2.5 mi (4 km).

Location

Open in Google Maps
CarriesCR 550 W
CrossesLittle Turtle Creek
Location00.25 N of CR 400 S
RouteCounty Highway 21
CountySullivan County
StateIndiana
Coordinates39.03042, -87.50845
Functional classRural Local

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

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.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionAugust 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry3: Basically intolerable, requiring high priority of corrective action
Waterway adequacy4: Meets minimum tolerable limits to be left in place as is
Approach roadway alignment8: Equal to present desirable criteria
Operating rating35.9 US tons
Inventory rating35.9 US tons

Structure

Structure typeOther
MaterialSteel
DeckSteel plate
Main spans1
Design loadUnknown
Structure length85 ft (25.9 m)
Longest span83 ft (25.2 m)
Deck width19 ft (5.8 m)
Roadway width18 ft (5.6 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic110 (2011)
Projected traffic130 by 2031
Trucks2%
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 proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost$763,000 (2017 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was CR 550 W over Little Turtle Creek built?

It was built in 1989, making it 36 years old in 2025.

What condition is CR 550 W over Little Turtle Creek in?

The National Bridge Inventory rates it in fair condition. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound. The last reported inspection was in August 2023.

How much traffic does CR 550 W over Little Turtle Creek carry?

About 110 vehicles per day (2011 count), of which roughly 2% are trucks.

How long is CR 550 W over Little Turtle Creek?

The structure is 85 ft (25.9 m) long with a longest span of 83 ft (25.2 m) and a deck 19 ft wide.

Who owns CR 550 W over Little Turtle Creek?

It is owned by the County Highway Agency.