Skip to main content
U.S. flag

An official website of the United States government

This site is currently in beta, and your feedback is helping shape its ongoing development.

CO-OPS Air Gap Observations from Various Bridges within the United States and Its Territories

Published by NOAA National Centers for Environmental Information | National Oceanic and Atmospheric Administration, Department of Commerce | Metadata Last Checked: December 18, 2025 | Last Modified: 2020-02-24T00:00:00.000+00:00
The Center for Operational Oceanographic Products and Services (CO-OPS) of the National Ocean Service (NOS), an organizational element of NOAA, operates and maintains a network of downward-looking microwave range sensors for determining the instantaneous clearance or air gap below bridges that span navigable waterways in the US. These observations are part of the National Physical Oceanographic Real-Time System (PORTS) Program. The data collected are used to ensure safety of navigation, improve economic efficiency, and protect coastal resources. Included in this data collection are preliminary 6-minute air gap observations from about 18 bridges spanning navigable waterways in the US.

Find Related Datasets

Click any tag below to search for similar datasets

Earth Science > Oceans > Tides Earth Science > Oceans > Tides > Tidal Height Earth Science > Oceans > Tides > Tidal Range Earth Science > Oceans > Coastal Processes > Sea Surface Height Earth Science > Oceans > Coastal Processes > Tidal Height Earth Science Services > Hazards Management oceanography Continent > North America > United States Of America > California Continent > North America > United States Of America > Delaware Continent > North America > United States Of America > Florida Continent > North America > United States Of America > Georgia Continent > North America > United States Of America > Louisiana Continent > North America > United States Of America > Maryland Continent > North America > United States Of America > New Jersey Continent > North America > United States Of America > New York Continent > North America > United States Of America > Pennsylvania Continent > North America > United States Of America > South Carolina Continent > North America > United States Of America Continent > North America DOC/NOAA/NESDIS/NCEI > National Centers for Environmental Information, NESDIS, NOAA, U.S. Department of Commerce 1 minute - < 1 hour Verrazano-Narrows Bridge, NY (8517986) Bayonne Bridge Air Gap, NY (8519461) Ben Franklin Bridge, PA (8545556) Delaware Memorial Bridge, DE (8550959) Reedy Point Air Gap, DE (8551911) Chesapeake City Air Gap, MD (8573928) Francis Scott Key Bridge Air Gap, MD (8574730) Chesapeake Bay Bridge Air Gap, MD (8575432) Don Holt Bridge, SC (8664753) Ravenel Bridge, SC (8665353) Talmadge Memorial Bridge, GA (8670674) Dames Point Bridge Air Gap, FL (8720376) Crescent City Air Gap, LA (8761847) Huey P. Long Bridge Air Gap, LA (8762002) I-210 Bridge Air Gap, LA (8767931) Vincent Thomas Bridge Air Gap, CA (9410676) Gerald Desmond Bridge Air Gap, CA (9410689) Bay Bridge D-E Span, CA (9414304) Bridge Microwave Air Gap Sensor Physical Oceanographic Real-Time System (PORTS) Coastal United States

data.gov

An official website of the GSA's Technology Transformation Services

Looking for U.S. government information and services?
Visit USA.gov