Prestressed　segmentally　constructed　balanced　cantilever　bridges　are　often　subjected　to　larger　deflections　than　those　predicted　by　calculations,　especially　for　long-term　effects.　In　this　paper,　the　case　of　modular　balanced　cantilever　bridges,　which　are　prestressed　segmental　bridges　obtained　through　a　repetition　of　the　same　double　cantilever,　is　investigated.　The　considered　bridges　are　two　typical　cases　of　modular　balanced　cantilever　both　subjected　to　large　deformations　during　their　lifetime.　In　this　case,　due　to　the　unusual　employed　static　scheme,　creep　deflections　indefinitely　evolve　over　time　particularly　at　the　end　of　the　cantilevers　and　in　correspondence　with　the　central　joint.　These　remarkable　deflections　cause　discomfort　for　vehicular　traffic　and　in　certain　cases　can　lead　to　the　bridge　collapse.　Important　extraordinary　maintenance　interventions　were　necessary　to　restore　the　viability　of　the　bridges　and　to　replace　the　viaduct　design　configuration.　To　this　aim,　the　static　schemes　of　the　structures　were　varied,　introducing　new　constraints,　new　tendons,　and　carbon　fiber　reinforcements.　In　the　present　work,　time　analysis　was　performed　to　compare　the　time-dependent　behavior　of　the　bridge　according　to　two　different　creep　models,　the　CEB-FIP　Model　Code　2010　and　the　RILEM　Model　B3,　with　the　real-time-dependent　behavior　of　the　bridge　observed　during　its　lifetime.　The　two　different　employed　models　exhibit　different　behaviors　in　terms　of　displacements　and　bending　moments　acting　on　the　bridge.　Interesting　considerations　are　made　on　their　reliability　in　simulating　the　long-term　creep　effects　that　evolve　indefinitely　over　time.　Moreover,　retrofitting　techniques　have　been　proposed　and　modeled　to　predict　their　effectiveness　in　reducing　time-dependent　deflections.