US Bridges

SR 75 over Muskrat Creek

Good

Boone County, Indiana · 00.32 N SR 32 · Structure no. 024890

Built
1994
31 years old
Condition
Good
inspected December 2023
Type
Slab
Concrete Continuous
Length
65 ft
3 main spans
Daily traffic
2,028
2021 count
Owner
State
State Highway Agency

About this bridge

SR 75 over Muskrat Creek is a concrete continuous slab carrying SR 75 over Muskrat Creek in Boone County, Indiana. It was built in 1994, so it is 31 years old, younger 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 2,028 vehicles a day, roughly 8% of them trucks, projected to reach 2,568 by 2032. The structure is 65 ft (19.8 m) long and 34 ft wide. If it were closed, the detour would be 5 mi (8 km).

Location

Open in Google Maps
CarriesSR 75
CrossesMuskrat Creek
Location00.32 N SR 32
RouteState Highway 75
CountyBoone County
StateIndiana
Coordinates40.05909, -86.61977
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
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionDecember 2023
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 rating50 US tons
Inventory rating38.6 US tons

Structure

Structure typeSlab
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length65 ft (19.8 m)
Longest span25 ft (7.6 m)
Deck width34 ft (10.4 m)
Roadway width31 ft (9.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic2,028 (2021)
Projected traffic2,568 by 2032
Trucks8%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed5 mi (8 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 Muskrat Creek built?

It was built in 1994, making it 31 years old in 2025.

What condition is SR 75 over Muskrat Creek 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 December 2023.

How much traffic does SR 75 over Muskrat Creek carry?

About 2,028 vehicles per day (2021 count), of which roughly 8% are trucks.

How long is SR 75 over Muskrat Creek?

The structure is 65 ft (19.8 m) long with a longest span of 25 ft (7.6 m) and a deck 34 ft wide.

Who owns SR 75 over Muskrat Creek?

It is owned by the State Highway Agency.