US Bridges

Hanging Rock RD over Salamonie River

PoorPosted for load

Wabash County, Indiana · 00.10 E of State RD 524 · Structure no. 8500320

Built
1963
62 years old
Condition
Poor
inspected May 2024
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
254 ft
3 main spans
Daily traffic
375
2024 count
Owner
County
County Highway Agency

About this bridge

Hanging Rock RD over Salamonie River is a steel continuous stringer/multi-beam or girder carrying Hanging Rock RD over Salamonie River in Wabash County, Indiana. It was built in 1963, so it is 62 years old, older than the Indiana average of 46.6 years.

The most recent inspection reported to the Federal Highway Administration rates it in poor condition with a lowest component rating of 4 out of 9. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions. Its operating status is: posted for load restriction.

It carries about 375 vehicles a day, roughly 5% of them trucks, projected to reach 550 by 2044. The structure is 254 ft (77.5 m) long and 29 ft wide. If it were closed, the detour would be 9.9 mi (16 km).

Location

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CarriesHanging Rock RD
CrossesSalamonie River
Location00.10 E of State RD 524
RouteCounty Highway 0
CountyWabash County
StateIndiana
Coordinates40.82961, -85.71869
Functional classRural Minor Collector

Condition and inspection

Poor

The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.

ComponentRatingMeaning
Deck5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Superstructure4 PoorAdvanced section loss, deterioration, spalling or scour.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionMay 2024
Inspection intervalevery 12 months
Operating statusPosted for load restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation4: Meets minimum tolerable limits to be left in place as is
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating43.4 US tons
Inventory rating26 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans3 (+2 approach)
Design loadUnknown
Structure length254 ft (77.5 m)
Longest span60 ft (18.4 m)
Deck width29 ft (8.7 m)
Roadway width24 ft (7.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic375 (2024)
Projected traffic550 by 2044
Trucks5%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed9.9 mi (16 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 proposedRehabilitation because of general structure deterioration or inadequate strength
Estimated improvement cost$1.2 million (2024 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was Hanging Rock RD over Salamonie River built?

It was built in 1963, making it 62 years old in 2025.

What condition is Hanging Rock RD over Salamonie River in?

The National Bridge Inventory rates it in poor condition. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions. The last reported inspection was in May 2024.

How much traffic does Hanging Rock RD over Salamonie River carry?

About 375 vehicles per day (2024 count), of which roughly 5% are trucks.

How long is Hanging Rock RD over Salamonie River?

The structure is 254 ft (77.5 m) long with a longest span of 60 ft (18.4 m) and a deck 29 ft wide.

Who owns Hanging Rock RD over Salamonie River?

It is owned by the County Highway Agency.