US Bridges

Spring Mill Road over I-465

Fair

Hamilton County, Indiana · 00.39 W US 31 · Structure no. 050460

Built
1992
33 years old
Condition
Fair
inspected April 2024
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
306 ft
2 main spans
Daily traffic
5,449
2004 count
Owner
State
State Highway Agency

About this bridge

Spring Mill Road over I-465 is a steel continuous stringer/multi-beam or girder carrying Spring Mill Road over I-465 in Hamilton County, Indiana. It was built in 1992, so it is 33 years old, younger 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 5,449 vehicles a day, roughly 5% of them trucks, projected to reach 7,677 by 2035. The structure is 306 ft (93.2 m) long and 38 ft wide. If it were closed, the detour would be 2.5 mi (4 km).

Location

Open in Google Maps
CarriesSpring Mill Road
CrossesI-465
Location00.39 W US 31
RouteCity Street 0
CountyHamilton County
StateIndiana
Coordinates39.93021, -86.16509
Functional classUrban Local

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.
Last inspectionApril 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation3: Basically intolerable, requiring high priority of corrective action
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Approach roadway alignment8: Equal to present desirable criteria
Operating rating16.1 US tons
Inventory rating12.1 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans2
Design loadHS 20
Structure length306 ft (93.2 m)
Longest span150 ft (45.7 m)
Deck width38 ft (11.6 m)
Roadway width35 ft (10.7 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic5,449 (2004)
Projected traffic7,677 by 2035
Trucks5%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesHighway
Detour if closed2.5 mi (4 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 Spring Mill Road over I-465 built?

It was built in 1992, making it 33 years old in 2025.

What condition is Spring Mill Road over I-465 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 April 2024.

How much traffic does Spring Mill Road over I-465 carry?

About 5,449 vehicles per day (2004 count), of which roughly 5% are trucks.

How long is Spring Mill Road over I-465?

The structure is 306 ft (93.2 m) long with a longest span of 150 ft (45.7 m) and a deck 38 ft wide.

Who owns Spring Mill Road over I-465?

It is owned by the State Highway Agency.