US Bridges

SR 47 over Walnut Fork

Good

Montgomery County, Indiana · 00.81 N SR 32 · Structure no. 017630

Built
1958
67 years old, rebuilt 2018
Condition
Good
inspected October 2024
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
238 ft
4 main spans
Daily traffic
6,195
2021 count
Owner
State
State Highway Agency

About this bridge

SR 47 over Walnut Fork is a steel continuous stringer/multi-beam or girder carrying SR 47 over Walnut Fork in Montgomery County, Indiana. It was built in 1958 and reconstructed in 2018, so it is 67 years old, older than the Indiana average of 46.6 years.

The most recent inspection reported to the Federal Highway Administration rates it in good condition with a lowest component rating of 7 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 6,195 vehicles a day, roughly 8% of them trucks, projected to reach 14,525 by 2033. The structure is 238 ft (72.6 m) long and 33 ft wide. If it were closed, the detour would be 2.5 mi (4 km).

CarriesSR 47
CrossesWalnut Fork
Location00.81 N SR 32
RouteState Highway 47
StateIndiana
Coordinates40.05823, -86.87446
Functional classRural Major Collector

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Deck8 Very GoodNo problems noted.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionOctober 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating46.4 US tons
Inventory rating35.7 US tons

Structure

MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans4
Design loadHS 20
Structure length238 ft (72.6 m)
Longest span72 ft (21.9 m)
Deck width33 ft (10 m)
Roadway width31 ft (9.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic6,195 (2021)
Projected traffic14,525 by 2033
Trucks8%
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

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 47 over Walnut Fork built?

It was built in 1958, making it 67 years old in 2025. It was reconstructed in 2018.

What condition is SR 47 over Walnut Fork in?

The National Bridge Inventory rates it in good condition. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted. The last reported inspection was in October 2024.

How much traffic does SR 47 over Walnut Fork carry?

About 6,195 vehicles per day (2021 count), of which roughly 8% are trucks.

How long is SR 47 over Walnut Fork?

The structure is 238 ft (72.6 m) long with a longest span of 72 ft (21.9 m) and a deck 33 ft wide.

Who owns SR 47 over Walnut Fork?

It is owned by the State Highway Agency.