, ▁Lith u ania , ▁New ▁Zealand , ▁Portugal , ▁Roman ia , ▁Russia , ▁Sloven ia , ▁Taiwan , ▁Turkey , ▁Ukraine , ▁Hung ary , ▁China , ▁India ▁and ▁Bel arus . ▁ ▁References ▁ ▁S ources ▁Sw eg on ▁webpage : ▁www . sw eg on . com ▁Air ▁Academy ▁webpage : ▁www . sw eg on ai rac ade my . com ▁Sw eg on ▁bro ch ures ▁and ▁present ations ▁In vest ment ▁AB ▁Lat our ▁website : ▁www . lat our . se ▁ ▁Category : Man ufact uring ▁companies ▁of ▁Sweden <0x0A> </s> ▁A ▁R ig id - frame ▁bridge ▁is ▁a ▁bridge ▁in ▁which ▁the ▁super structure ▁and ▁sub structure ▁are ▁rig id ly ▁connected ▁to ▁act ▁as ▁a ▁continuous ▁unit . ▁Typ ically , ▁the ▁structure ▁is ▁cast ▁mon ol ith ically , ▁making ▁the ▁structure ▁continuous ▁from ▁deck ▁to ▁foundation . ▁ ▁The ▁connections ▁between ▁members ▁are ▁rig id ▁connections ▁which ▁transfer ▁b ending ▁moment , ▁ax ial ▁forces , ▁and ▁she ar ▁forces . ▁ ▁A ▁bridge ▁design ▁consisting ▁of ▁a ▁rig id ▁frame ▁can ▁provide ▁significant ▁struct ural ▁benefits , ▁but ▁can ▁also ▁be ▁difficult ▁to ▁design ▁and / or ▁construct . ▁ ▁History ▁The ▁use ▁of ▁rig id - frame ▁brid ges ▁began ▁in ▁Germany ▁in ▁the ▁early ▁tw enti eth ▁century ▁and ▁quickly ▁spread ▁to ▁the ▁Amer icas . ▁Em í lio ▁Henri que ▁Ba um gart ▁and ▁Arthur ▁G . ▁Hay den , ▁in ▁particular , ▁gained ▁not