US Bridges

Southport Road over Little Buck Creek

FairPosted for load

Marion County, Indiana · 00.20 W of Madison Ave · Structure no. 4900431

Built
1957
68 years old, rebuilt 1997
Condition
Fair
inspected July 2024
Type
Stringer/Multi-beam or Girder
Concrete
Length
111 ft
3 main spans
Daily traffic
16,950
2019 count
Owner
City
City or Municipal Highway Agency

About this bridge

Southport Road over Little Buck Creek is a concrete stringer/multi-beam or girder carrying Southport Road over Little Buck Creek in Marion County, Indiana. It was built in 1957 and reconstructed in 1997, so it is 68 years old, older 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. Its operating status is: posted for load restriction.

It carries about 16,950 vehicles a day, roughly 5% of them trucks, projected to reach 25,187 by 2039. The structure is 111 ft (33.9 m) long and 38 ft wide. If it were closed, the detour would be 2.5 mi (4 km).

CarriesSouthport Road
CrossesLittle Buck Creek
Location00.20 W of Madison Ave
RouteCity Street 0
StateIndiana
Coordinates39.66489, -86.13029
Functional classRural Minor Arterial

Condition and inspection

Fair

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

ComponentRatingMeaning
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionJuly 2024
Inspection intervalevery 24 months
Operating statusPosted for load restriction
ScourFoundations stable; scour above top of footing
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry2: Basically intolerable, requiring high priority of replacement
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating50.7 US tons
Inventory rating30.2 US tons

Structure

MaterialConcrete
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length111 ft (33.9 m)
Longest span37 ft (11.2 m)
Deck width38 ft (11.5 m)
Roadway width28 ft (8.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic16,950 (2019)
Projected traffic25,187 by 2039
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

OwnerCity or Municipal Highway Agency
Maintained byCity or Municipal Highway Agency
Historic statusEligible for the National Register of Historic Places
Work proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost$3 million (2023 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was Southport Road over Little Buck Creek built?

It was built in 1957, making it 68 years old in 2025. It was reconstructed in 1997.

What condition is Southport Road over Little Buck 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 July 2024.

How much traffic does Southport Road over Little Buck Creek carry?

About 16,950 vehicles per day (2019 count), of which roughly 5% are trucks.

How long is Southport Road over Little Buck Creek?

The structure is 111 ft (33.9 m) long with a longest span of 37 ft (11.2 m) and a deck 38 ft wide.

Who owns Southport Road over Little Buck Creek?

It is owned by the City or Municipal Highway Agency.