Light

ZIP Code 62417

Lawrence County, Illinois — Bridgeport

20PSF (Ground Snow Load)
LightClassification

What This Means

Lawrence County, Illinois has a light ground snow load of 20 PSF per ASCE 7-22. At this level, most standard residential roofs are designed to handle the load without issue. However, flat or low-slope roofs should still be checked for drifting and sliding snow.

Snow Load Details

ZIP Code62417
CountyLawrence
CityBridgeport
StateIllinois (IL)
Ground Snow Load20 PSF — Light
Classification Range1 - 20 PSF
Data QualityMeasured

Source: ASCE 7-22 ground snow load polygons via ArcGIS

Roof Snow Load Calculator

ASCE 7-22 flat roof formula:  pf = 0.7 × Ce × Ct × Is × pg

Your ground snow load (pg): 20 PSF

Roof Snow Load: 14 PSF

ⓘ Simplified estimate for flat roofs. Sloped roofs, drift zones, and unbalanced loads need additional calculations. Consult a structural engineer for final design.

Lawrence County Snow Load Map

Counties colored by snow load classification. Gray = No Load, Blue = Light, Amber = Moderate, Orange = Heavy, Red = Extreme, Purple = Case Study.

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62414 20 PSF Light 62415 20 PSF Light 62418 20 PSF Light 62419 20 PSF Light 62420 20 PSF Light

Frequently Asked Questions

What is the ground snow load for ZIP code 62417?

ZIP code 62417 is in Lawrence County, Illinois, with a ground snow load of 20 PSF, classified as light per ASCE 7-22.

Is my roof strong enough for snow in 62417?

With a light ground snow load of 20 PSF, standard residential construction typically handles this load, but verify with your local building code.

What county is ZIP code 62417 in?

ZIP code 62417 is in Lawrence County, Illinois (IL).