BRIDGE BASICS
Jan 01, 2019
3 minutes
by Andrew Matthews
Bridge Key
Tension
Compression
Here’s a look at six basic bridge types. For help with bridge terms, check out pages 8–9.
BEAM Beam
A beam bridge was one of the earliest bridges. It is also one of the simplest and least expensive to build. Its main elements are a straight horizontal beam supported by a pier at each end. The load pushes straight down on the beam. It is great for short distances—usually not more than 250 feet. Modern beam bridges made of multiple
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