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The tubes themselves range from a depth of 50 feet (15.2 m) below ground to 101 feet (30.8 m) below ground. Baltimore Harbor Tunnel, traveling southbound on I-895 As of July 1, 2015, the toll rate for cars is $4.00 cash or $3.00 E-ZPass , paid in both directions.
Maintenance of harbor channels and navigation aids began early. Dredging in the harbor can be traced back as far as 1783, when the Ellicott brothers (of Ellicott Dredges) excavated the bottom at their wharf in the Inner Harbor. In 1790, the state government began systematic dredging using a "mud machine", which used a horse-drawn drag bucket ...
Nautical charts must be labeled with navigational and depth information. There are a few commercial software packages that do automatic label placement for any kind of map or chart. Modern systems render electronic charts consistent with the IHO S-52 specification, issued by the International Hydrographic Organization (IHO). [7]
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Operated by the Maryland Transportation Authority (MDTA), the bridge was the outermost of three toll crossings of Baltimore's harbor, along with the Baltimore Harbor and Fort McHenry tunnels. The bridge carried an estimated 11.5 million vehicles annually, including many trucks carrying hazardous materials that are prohibited in the tunnels.
The Inner Harbor viewed from the Baltimore Aquarium Liberty Reservoir Volunteers at a community cleanup of Herbert Run, a tributary of the Patapsco River running through Arbutus, Maryland The Patapsco River ( / p ə ˈ t æ p ˌ s k oʊ / pə- TAP -skoh ⓘ ) mainstem is a 39-mile (63 km) [ 1 ] river in central Maryland that flows into the ...