Lyons, CO Noise Levels
Lyons, CO: what the federal noise map shows
Lyons, CO'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. This describes Lyons as a whole, not a specific block, the underlying BTS map resolves to about 38 meters per pixel, sampled at the town's own center point.
Lyons'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 Lyons ranks
Among the 3,622 US places in this dataset with any measurable transportation noise, Lyons ranks 228, loudest first. About 2,155 people live there, making it the 7,414th largest place in this dataset.
Your street may differ from Lyons's reading
For a single house or lot in Lyons 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 Lyons'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.