US Bridges

SR 71 over Sugar Creek

Fair

Benton County, Indiana · 02.93 N SR 18 · Structure no. 024710

Built
1984
41 years old
Condition
Fair
inspected November 2023
Type
Slab
Concrete Continuous
Length
93 ft
3 main spans
Daily traffic
74
2021 count
Owner
State
State Highway Agency

About this bridge

SR 71 over Sugar Creek is a concrete continuous slab carrying SR 71 over Sugar Creek in Benton 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 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 74 vehicles a day, roughly 7% of them trucks, projected to reach 569 by 2034. The structure is 93 ft (28.3 m) long and 36 ft wide. If it were closed, the detour would be 7.5 mi (12 km).

Location

Open in Google Maps
CarriesSR 71
CrossesSugar Creek
Location02.93 N SR 18
RouteState Highway 71
CountyBenton County
StateIndiana
Coordinates40.66096, -87.48609
Functional classRural Major Collector

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 protection8 Very GoodNo problems noted.
Last inspectionNovember 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourScour critical; foundations unstable for calculated scour conditions
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry9: Superior to present desirable criteria
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating36.4 US tons
Inventory rating28.2 US tons

Structure

Structure typeSlab
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length93 ft (28.3 m)
Longest span37 ft (11.2 m)
Deck width36 ft (11.1 m)
Roadway width34 ft (10.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic74 (2021)
Projected traffic569 by 2034
Trucks7%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed7.5 mi (12 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerState Highway Agency
Maintained byState Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was SR 71 over Sugar Creek built?

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

What condition is SR 71 over Sugar 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 November 2023.

How much traffic does SR 71 over Sugar Creek carry?

About 74 vehicles per day (2021 count), of which roughly 7% are trucks.

How long is SR 71 over Sugar Creek?

The structure is 93 ft (28.3 m) long with a longest span of 37 ft (11.2 m) and a deck 36 ft wide.

Who owns SR 71 over Sugar Creek?

It is owned by the State Highway Agency.