US Bridges

SR 75 over I-74 Eb/Wb

Fair

Boone County, Indiana · 01.36 N SR 234 · Structure no. 024860

Built
1963
62 years old, rebuilt 1983
Condition
Fair
inspected November 2024
Type
Stringer/Multi-beam or Girder
Concrete Continuous
Length
236 ft
4 main spans
Daily traffic
2,806
2014 count
Owner
State
State Highway Agency

About this bridge

SR 75 over I-74 Eb/Wb is a concrete continuous stringer/multi-beam or girder carrying SR 75 over I-74 Eb/Wb in Boone County, Indiana. It was built in 1963 and reconstructed in 1983, 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 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 2,806 vehicles a day, roughly 6% of them trucks, projected to reach 4,066 by 2033. The structure is 236 ft (71.9 m) long and 36 ft wide. If it were closed, the detour would be 16.8 mi (27 km).

CarriesSR 75
CrossesI-74 Eb/Wb
Location01.36 N SR 234
RouteState Highway 75
StateIndiana
Coordinates39.94238, -86.61972
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.
Superstructure8 Very GoodNo problems noted.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionNovember 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation6: Equal to present minimum criteria
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Approach roadway alignment8: Equal to present desirable criteria
Operating rating72.9 US tons
Inventory rating56.4 US tons

Structure

MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans4
Design loadHL 93
Structure length236 ft (71.9 m)
Longest span73 ft (22.2 m)
Deck width36 ft (11 m)
Roadway width30 ft (9.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic2,806 (2014)
Projected traffic4,066 by 2033
Trucks6%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesHighway
Detour if closed16.8 mi (27 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—
NavigationNot applicable (no waterway)

Frequently asked questions

When was SR 75 over I-74 Eb/Wb built?

It was built in 1963, making it 62 years old in 2025. It was reconstructed in 1983.

What condition is SR 75 over I-74 Eb/Wb 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 November 2024.

How much traffic does SR 75 over I-74 Eb/Wb carry?

About 2,806 vehicles per day (2014 count), of which roughly 6% are trucks.

How long is SR 75 over I-74 Eb/Wb?

The structure is 236 ft (71.9 m) long with a longest span of 73 ft (22.2 m) and a deck 36 ft wide.

Who owns SR 75 over I-74 Eb/Wb?

It is owned by the State Highway Agency.