A bridge structure comprising in combination:
- (a) a first elongated compression member having one end thereof supported upon a first base and the other free end thereof disposed upwardly of said first base;
- (b) a first elongated boom-like compression member supported upon one end thereof, said first elongated boom-like compression member being disposed angularly relative to said first elongated compression member whereby the free ends of said first elongated compression member and said first elongated boom-like compression member are spaced one from another in a first vertical plane;
- (c) a first tension tie means having a fixed length extending between said free ends of said first elongated compression member and said first elongated boom-like compression member, whereby to connectedly support said first elongated boom-like compression member off said first elongated compression member, a second tension tie means having a fixed length extending between said free end of said first elongated compression member and a first anchor point spaced from said first base whereby an acute angle is formed between said second tension tie means and said first elongated compression member;
- (d) a second elongated compression member, being similar to said first elongated compression member, said second elongated compression member having one end thereof supported upon a second base and the other free end thereof disposed upwardly of said second base in similar manner to said first elongated compression member, said first and second bases being positioned in selected spaced relation one to another;
- (e) a second elongated boom-like compression member supported upon one end thereof, said second elongated boom-like compression member being similarly angularly disposed, as said first elongated boom-like compression member, relative to said second elongated compression member whereby the free ends of said second elongated compression member and said second elongated boom-like compression member are spaced one from another in a second vertical plane substantially parallel spaced from said first vertical plane;
- (f) a third tension tie means having a fixed length, similar to said first tension tie means, said third tension tie means extending between said free ends of said second elongated compression member and said second elongated boom-like compression member, whereby to connectedly support said second elongated boom-like compression member off said second elongated compression member, fourth tension tie means having a fixed length, similar to said second tension tie means, said fourth tension means extending between said free end of said second elongated compression member to a second anchor point spaced from said second base whereby an acute angle is formed between said fourth tension tie means and said second elongated compression member;
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- (g) an elongated traffic deck structure, comprising a rigid deck truss, disposed below and longitudinally of said first and second elongated boom-like compression members and supported from above via respectively fifth and sixth tension tie means connected between the free ends of said first and second elongated boom-like compression members and said deck structure, said fifth and sixth tension tie means lying respectively in said first and second vertical planes and comprising a plurality of elongated tension members depending in fan-like configuration toward said deck structure.