Chicago Ridge, IL Noise Levels
Chicago Ridge, IL: what the federal noise map shows
Chicago Ridge, IL's 60-69.9 dB(A) band spans one of HUD's zone boundaries, so the honest answer is a range: somewhere between "Acceptable" (65 dB(A) or below) and "Normally Unacceptable" (65-75 dB(A)), not one clean verdict. Rail traffic drives that number here, not the other two sources. That's the reading at Chicago Ridge's Census-defined center point, not any one street, BTS's map is a live raster, not a per-address service.
Chicago Ridge's noise, by source
Each of the three transportation modes gets its own model from BTS; the combined figure above is what they add up to.
What this means for a house here
Depending on where in that band the true value sits, it may also clear FHWA's 66 dB(A) residential impact threshold (23 CFR 772, Table 1), the trigger highway agencies use for sound-wall decisions. The same window and door upgrades that work on road noise also cut broadband rail noise, though very low-frequency freight rumble travels through walls, not just glass.
Where Chicago Ridge ranks
Among the 3,622 US places in this dataset with any measurable transportation noise, Chicago Ridge ranks 141, loudest first. About 14,036 people live there, making it the 2,509th largest place in this dataset.
Your street may differ from Chicago Ridge's reading
For a single house or lot in Chicago Ridge rather than the town-wide figure above, BTS's own map is the same free source, queried directly.
More on how this number was built
For exactly which federal dataset feeds Chicago Ridge's figure, see the methodology guide. Since rail traffic is what's driving this reading, the guide to what actually cuts each kind of noise covers the fix that fits.