US Bridges

Mahon Road over Little Wabash River

Fair

Huntington County, Indiana · 0.05 MI SE of US 24 · Structure no. 3500070

Built
1965
60 years old
Condition
Fair
inspected September 2023
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
146 ft
3 main spans
Daily traffic
375
2021 count
Owner
County
County Highway Agency

About this bridge

Mahon Road over Little Wabash River is a prestressed concrete stringer/multi-beam or girder carrying Mahon Road over Little Wabash River in Huntington County, Indiana. It was built in 1965, so it is 60 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 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 375 vehicles a day, roughly 2% of them trucks, projected to reach 509 by 2041. The structure is 146 ft (44.4 m) long and 27 ft wide. If it were closed, the detour would be 2.5 mi (4 km).

Location

Open in Google Maps
CarriesMahon Road
CrossesLittle Wabash River
Location0.05 MI SE of US 24
RouteCounty Highway 0
CountyHuntington County
StateIndiana
Coordinates40.9381, -85.37919
Functional classRural Minor 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
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure7 GoodSome minor problems.
Channel and channel protection5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionSeptember 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourScour critical; foundations unstable for calculated scour conditions
Structural evaluation6: Equal to present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating60.6 US tons
Inventory rating36.3 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length146 ft (44.4 m)
Longest span48 ft (14.6 m)
Deck width27 ft (8.2 m)
Roadway width25 ft (7.6 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic375 (2021)
Projected traffic509 by 2041
Trucks2%
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

OwnerCounty Highway Agency
Maintained byCounty Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedOther structural work, including hydraulic replacements
Estimated improvement cost$40,000 (2021 estimate)
NavigationNavigation control on waterway (bridge permit required)

Frequently asked questions

When was Mahon Road over Little Wabash River built?

It was built in 1965, making it 60 years old in 2025.

What condition is Mahon Road over Little Wabash River 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 September 2023.

How much traffic does Mahon Road over Little Wabash River carry?

About 375 vehicles per day (2021 count), of which roughly 2% are trucks.

How long is Mahon Road over Little Wabash River?

The structure is 146 ft (44.4 m) long with a longest span of 48 ft (14.6 m) and a deck 27 ft wide.

Who owns Mahon Road over Little Wabash River?

It is owned by the County Highway Agency.