US Bridges

SR 71 over Mud Creek

Fair

Benton County, Indiana · 01.83 N SR 18 · Structure no. 024700

Built
1984
41 years old
Condition
Fair
inspected November 2023
Type
Stringer/Multi-beam or Girder
Prestressed Concrete Continuous
Length
122 ft
3 main spans
Daily traffic
150
2020 count
Owner
State
State Highway Agency

About this bridge

SR 71 over Mud Creek is a prestressed concrete continuous stringer/multi-beam or girder carrying SR 71 over Mud 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 6 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 150 vehicles a day, roughly 11% of them trucks, projected to reach 160 by 2030. The structure is 122 ft (37.1 m) long and 36 ft wide. If it were closed, the detour would be 11.8 mi (19 km).

Location

Open in Google Maps
CarriesSR 71
CrossesMud Creek
Location01.83 N SR 18
RouteState Highway 71
CountyBenton County
StateIndiana
Coordinates40.64549, -87.48487
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
Deck7 GoodSome minor problems.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection7 GoodSome minor problems.
Last inspectionNovember 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourCountermeasures installed to correct a previously existing problem
Structural evaluation6: Equal to present minimum criteria
Deck geometry7: Better than present minimum criteria
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating50.4 US tons
Inventory rating38.9 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length122 ft (37.1 m)
Longest span46 ft (14.1 m)
Deck width36 ft (11.1 m)
Roadway width34 ft (10.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic150 (2020)
Projected traffic160 by 2030
Trucks11%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed11.8 mi (19 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 Mud Creek built?

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

What condition is SR 71 over Mud 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 Mud Creek carry?

About 150 vehicles per day (2020 count), of which roughly 11% are trucks.

How long is SR 71 over Mud Creek?

The structure is 122 ft (37.1 m) long with a longest span of 46 ft (14.1 m) and a deck 36 ft wide.

Who owns SR 71 over Mud Creek?

It is owned by the State Highway Agency.