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SkyPesos:

--- Quote from: Bitmapped on September 18, 2021, 11:52:08 AM ---
--- Quote from: 6a on September 18, 2021, 04:48:21 AM ---
--- Quote from: Bitmapped on September 17, 2021, 07:06:21 PM ---
--- Quote from: Great Lakes Roads on September 17, 2021, 04:43:10 PM ---Can someone explain to me the exit numbers on US 68 from I-70 to the County Line Road? I thought that they were doing exit numbers from the mile marker.

Here are the exit numbers from south to north:
Exit 5A-B: I-70 (Columbus, Dayton)
Exit 7A-B: US 40/OH State Route 4 (Springfield, Dayton)
Exit 8: OH State Route 41 (Troy, Springfield)
Exit 12: OH State Route 334 East (River Road, Springfield)
Exit 15: County Line Road

--- End quote ---

For non-Interstates, originally numbered them based on county mileage rather than statewide.

--- End quote ---
Iíve asked this same question. Elsewhere, the exit numbers match up with the mileage within the state. Here, itís only within the county.

--- End quote ---
Newer projects number things statewide. County-based numbers are generally getting replaced with state-based ones as part of larger sign replacement projects.

--- End quote ---
US 68's exit numbers in Springfield are new. The August 2019 GSV doesn't have exit numbers on US 68, while the August 2021 GSV does. This is why some of us are questioning the use of county based exit numbers here, as recent non-interstate expressways and freeways had state based exit numbers added on.

Great Lakes Roads:

--- Quote from: SkyPesos on September 18, 2021, 11:59:30 AM ---
--- Quote from: Bitmapped on September 18, 2021, 11:52:08 AM ---
--- Quote from: 6a on September 18, 2021, 04:48:21 AM ---
--- Quote from: Bitmapped on September 17, 2021, 07:06:21 PM ---
--- Quote from: Great Lakes Roads on September 17, 2021, 04:43:10 PM ---Can someone explain to me the exit numbers on US 68 from I-70 to the County Line Road? I thought that they were doing exit numbers from the mile marker.

Here are the exit numbers from south to north:
Exit 5A-B: I-70 (Columbus, Dayton)
Exit 7A-B: US 40/OH State Route 4 (Springfield, Dayton)
Exit 8: OH State Route 41 (Troy, Springfield)
Exit 12: OH State Route 334 East (River Road, Springfield)
Exit 15: County Line Road

--- End quote ---

For non-Interstates, originally numbered them based on county mileage rather than statewide.

--- End quote ---
Iíve asked this same question. Elsewhere, the exit numbers match up with the mileage within the state. Here, itís only within the county.

--- End quote ---
Newer projects number things statewide. County-based numbers are generally getting replaced with state-based ones as part of larger sign replacement projects.

--- End quote ---
US 68's exit numbers in Springfield are new. The August 2019 GSV doesn't have exit numbers on US 68, while the August 2021 GSV does. This is why some of us are questioning the use of county based exit numbers here, as recent non-interstate expressways and freeways had state based exit numbers added on.

--- End quote ---
Oh, and OH State Route 4 also has new exit numbers west of Springfield... https://www.google.com/maps/@39.8960537,-83.9321776,3a,75y,226.15h,81.74t/data=!3m7!1e1!3m5!1sQzbnFbuIHjIjl7UB37uJcg!2e0!5s20210801T000000!7i16384!8i8192
https://www.google.com/maps/@39.9071633,-83.9094401,3a,75y,44.49h,90t/data=!3m7!1e1!3m5!1sKbaW1M1LqP005Yzu8mlI-w!2e0!5s20210801T000000!7i16384!8i8192

SkyPesos:
Probably a quirk with District 7 then. Note that both OH 4 and US 35 in Dayton doesn't have exit numbers yet, while if it was in literally any other ODOT district, it would've got exit numbers by now. Wouldn't be surprised to see county based mileage ones go up in the next few months for those two freeways too.

SkyPesos:
I was digging through some ODOT files today, and found that there was a recent (from a year ago) alternative study for the NB I-75 alignment between the OH 126 (exit 10) and Shepherd (exit 13) interchanges. This alternative study would relocate NB I-75 to where the current SB alignment is, and remove the existing NB alignment, while still widening both directions to 4 lanes each. It would also include a new NB exit as a split diamond to Lock Street and Wyoming Ave. The SB side may also have this split diamond, though itís more difficult with development nearby, and a new interchange to Millsdale to the south of the current interchange may be considered instead. Regardless, the current substandard SB interchange to Cooper Ave is planned to be removed. The decision on whether to use this alternative alignment or keep the current alignment with the split will be made in November of this year. Apparently, it's cheaper than keeping NB I-75 where it currently is, and widening it, and will make the geometry of the planned WB 126 to NB 75 ramp more smooth.

Link the the study: https://www.dot.state.oh.us/projects/files/I-75%20Thru%20the%20Valley%20-%20Alternate%20Feasibility%20Report%20(July%202020).pdf
Small update from the above: https://www.dot.state.oh.us/projects/files/I-75%20Thru%20the%20Valley%20-%20Study%20Update%20(April%202021).pdf

seicer:
Interesting. Now that the abandoned Stearns & Foster factory (which was located alongside the canal that later became southbound I-75) is demolished, it should make that project far easier.

I never realized that the transmission towers along northbound I-75 were a major reason as to why that alignment may not be considered as part of the Thru the Valley project. Relocating the lines would require a lot of demolitions and two years - at a large expense.

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