US Bridges

Mcmillian St. over I71;CONRAIL RR Tunnel

Fair

Hamilton County, Ohio · .12MI S. of Wm.Howard Taf · Structure no. 3114260

Built
1972
53 years old
Condition
Fair
inspected September 2024
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
204 ft
3 main spans
Daily traffic
16,495
2015 count
Owner
State
State Highway Agency

About this bridge

Mcmillian St. over I71;CONRAIL RR Tunnel is a steel continuous stringer/multi-beam or girder carrying Mcmillian St. over I71;CONRAIL RR Tunnel in Hamilton County, Ohio. It was built in 1972, so it is 53 years old, older than the Ohio average of 47.3 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 16,495 vehicles a day, roughly 7% of them trucks, projected to reach 136,129 by 2035. The structure is 204 ft (62.2 m) long and 62 ft wide.

Location

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CarriesMcmillian St.
CrossesI71;CONRAIL RR Tunnel
Location.12MI S. of Wm.Howard Taf
RouteCity Street 8516
CountyHamilton County
StateOhio
Coordinates39.1264, -84.49755
Functional classUrban Other Principal Arterial

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.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Last inspectionSeptember 2024
Inspection intervalevery 12 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation7: Better than present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Approach roadway alignment9: Superior to present desirable criteria
Operating rating54.2 US tons
Inventory rating41.8 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length204 ft (62.2 m)
Longest span90 ft (27.4 m)
Deck width62 ft (18.9 m)
Roadway width44 ft (13.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic16,495 (2015)
Projected traffic136,129 by 2035
Trucks7%
Lanes on structure3
Traffic directionTwo-way traffic
CarriesHighway
CrossesHighway
Detour if closed—
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 Mcmillian St. over I71;CONRAIL RR Tunnel built?

It was built in 1972, making it 53 years old in 2025.

What condition is Mcmillian St. over I71;CONRAIL RR Tunnel 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 2024.

How much traffic does Mcmillian St. over I71;CONRAIL RR Tunnel carry?

About 16,495 vehicles per day (2015 count), of which roughly 7% are trucks.

How long is Mcmillian St. over I71;CONRAIL RR Tunnel?

The structure is 204 ft (62.2 m) long with a longest span of 90 ft (27.4 m) and a deck 62 ft wide.

Who owns Mcmillian St. over I71;CONRAIL RR Tunnel?

It is owned by the State Highway Agency.