US Bridges

SR 75 over Mchaffie Branch

Fair

Putnam County, Indiana · 00.08 N US 40 · Structure no. 024760

Built
1947
78 years old, rebuilt 1997
Condition
Fair
inspected December 2023
Type
Slab
Concrete Continuous
Length
81 ft
3 main spans
Daily traffic
2,271
2021 count
Owner
State
State Highway Agency

About this bridge

SR 75 over Mchaffie Branch is a concrete continuous slab carrying SR 75 over Mchaffie Branch in Putnam County, Indiana. It was built in 1947 and reconstructed in 1997, so it is 78 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 2,271 vehicles a day, roughly 17% of them trucks, projected to reach 3,968 by 2032. The structure is 81 ft (24.6 m) long and 34 ft wide. If it were closed, the detour would be 0.6 mi (1 km).

Location

Open in Google Maps
CarriesSR 75
CrossesMchaffie Branch
Location00.08 N US 40
RouteState Highway 75
CountyPutnam County
StateIndiana
Coordinates39.62885, -86.67001
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
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure7 GoodSome minor problems.
Channel and channel protection7 GoodSome minor problems.
Last inspectionDecember 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating56.4 US tons
Inventory rating43.5 US tons

Structure

Structure typeSlab
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length81 ft (24.6 m)
Longest span32 ft (9.7 m)
Deck width34 ft (10.4 m)
Roadway width31 ft (9.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic2,271 (2021)
Projected traffic3,968 by 2032
Trucks17%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesWaterway
Detour if closed0.6 mi (1 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 75 over Mchaffie Branch built?

It was built in 1947, making it 78 years old in 2025. It was reconstructed in 1997.

What condition is SR 75 over Mchaffie Branch 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 December 2023.

How much traffic does SR 75 over Mchaffie Branch carry?

About 2,271 vehicles per day (2021 count), of which roughly 17% are trucks.

How long is SR 75 over Mchaffie Branch?

The structure is 81 ft (24.6 m) long with a longest span of 32 ft (9.7 m) and a deck 34 ft wide.

Who owns SR 75 over Mchaffie Branch?

It is owned by the State Highway Agency.