Taking　an　example　of　a　continuous　steel-concrete　composite　beam　bridge　with　single　column　piers　under　a　ramp,　a　space　finite　element　model　was　built.　According　to　the　structure　characteristics　and　relevant　design　manual,　an　anti-overturning　stability　analysis　of　the　bridge　under　the　design　limit　load　was　conducted,　and　a　practical　vehicle　load　and　possible　arrangement　of　different　forms　of　the　load　were　analyzed.　A　further　study　on　the　influence　of　related　parameters　of　anti-overturning　stability　was　developed　to　determine　the　probability　of　overturning　under　extreme　load　arrangement.　Finally,　a　field-loading　test　with　the　designed　vehicle　arrangement　was　conducted　to　investigate　the　experimental　anti-overturning　stability　properties　of　the　designed　bridge.　The　test　results　were　used　to　further　verify　the　consistency　of　the　related　standards　about　the　anti-overturning　stability　of　this　kind　of　bridge.　Some　suggestions　to　avoid　the　corresponding　accidents　are　provided.　©　2014　American　Society　of　Civil　Engineers.