BRIDGE CHALLENGE #3

BEAM BRIDGE PROS

• easy to build
• inexpensive compared to other bridges

BEAM BRIDGE CONS

• limited length/span
• boats cannot pass under it

TRUSS BRIDGE PROS

• very strong
• frequently used as a draw bridge

TRUSS BRIDGE CONS

• hard to build
• high maitenence

ARCH BRIDGE PROS

• very strong
• covers wide spans
• considered attractive

ARCH BRIDGE CONS

• expensive to build
• boats cannot easily pass under

SUSPENSION BRIDGE PROS

• covers large spans
• considered atractive
• affordable

SUSPENSION BRIDGE CONS

• hard to build
• cables could snap

My Bridge
I chose a beam bridge because I think it's easy to build (I needed my bridge to be VERY easy to build considering I have a cast on.) It is also inexpensive compared to most of the other bridges.

Materials Pricing

1 sheet of paper = $1,000,000
1 inch of string=
$50,000

Materials List

beams:6 pieces of paper=
$6,000,000
roadway:2 pieces of paper=
$2,000,000
total:$8,000,000