sweetapricity/bridgedeck-snodas

Bridgedeck — SNODAS April 1 SWE at Bridge Locations (2003–2023)

Part of the bridgedeck dataset collection for US bridge deck deterioration research.

⚠️ Pipeline dependency — This dataset contains pre-sampled SNODAS snow data for all US bridge locations. It is shared to avoid re-downloading ~330 MB of annual SNODAS tar files from NSIDC.

Overview

April 1 Snow Water Equivalent (SWE) sampled at each unique US bridge location from NOAA's Snow Data Assimilation System (SNODAS), 2003–2023. April 1 SWE represents peak annual snowpack — a proxy for total winter snow exposure that drives freeze-thaw cycling, deicing salt application, and moisture infiltration.

Source

Source: NOAA NOHRSC SNODAS via NSIDC Product: Masked CONUS, 1km resolution, daily (we use April 1 only) Coverage: CONUS, 2003–2023 (not available before 2003)

Contents

File	Description
snodas_bridge_swe.csv	April 1 SWE (mm) at each bridge for each year

Schema

Column	Type	Description
bridge_id	str	{state_fips}_{county_fips}_{structure_number} — joins to NBI
year	int	Year (2003–2023)
swe_apr1_mm	float	April 1 Snow Water Equivalent (mm)

Features Derived

Feature	Description
swe_apr1_mm	Peak annual snowpack at bridge location (mm)

Notes

• SNODAS only available from 2003 — years 2000–2002 have NaN
• ~4% null for bridges outside SNODAS coverage (coastal/border areas)
• Values range from 0 (no snow) to ~2000 mm (deep mountain snowpack)

Related Datasets

Repo	Type	Description
sweetapricity/bridgedeck-nbi	Primary	National Bridge Inventory
sweetapricity/bridgedeck-prism	Primary	PRISM climate features
sweetapricity/bridgedeck-snodas	Dependency	This dataset — SNODAS snowfall