0
  • DE
  • EN
  • FR
  • Base de données et galerie internationale d'ouvrages d'art et du génie civil

Publicité

Restoration of Two Historic Movable Bridges

 Restoration of Two Historic Movable Bridges
Auteur(s):
Présenté pendant IABSE Congress: The Evolving Metropolis, New York, NY, USA, 4-6 September 2019, publié dans , pp. 2263-2272
DOI: 10.2749/newyork.2019.2263
Prix: € 25,00 incl. TVA pour document PDF  
AJOUTER AU PANIER
Télécharger l'aperçu (fichier PDF) 0.26 MB

The Murray Morgan Lift Bridge in Tacoma WA was constructed in 1913. In 2007, the bridge was closed to vehicular and pedestrian traffic for advanced deterioration of structural systems, mechanical a...
Lire plus

Détails bibliographiques

Auteur(s): (Hardesty & Hanover)
Médium: papier de conférence
Langue(s): anglais
Conférence: IABSE Congress: The Evolving Metropolis, New York, NY, USA, 4-6 September 2019
Publié dans:
Page(s): 2263-2272 Nombre total de pages (du PDF): 10
Page(s): 2263-2272
Nombre total de pages (du PDF): 10
DOI: 10.2749/newyork.2019.2263
Abstrait:

The Murray Morgan Lift Bridge in Tacoma WA was constructed in 1913. In 2007, the bridge was closed to vehicular and pedestrian traffic for advanced deterioration of structural systems, mechanical and electrical components. The bridge was scheduled for demolition. In 2010 after acquiring funding, the City of Tacoma awarded a design‐build contract to reconstruct this historic bridge. The restoration work included structural steel strengthening repairs, seismic improvements, roadway deck, and stringer replacement, complete paint system removal/re‐coating, as well as modernization of the antiquated mechanical/electrical systems. Construction was completed 2012 and full legal load traffic was restored.

The Broadway Bridge in Portland OR was constructed in 1912. The bridge is a unique Rall type double leaf bascule and is listed on the National Register of Historic Places. After more than 100 years of service, the cast steel Rall wheels and tracks that support the entire weight of the movable spans were severely deteriorated and required replacement. Complex jacking, machining, and updated materials were required to renew these critical components. Construction was completed in 2018.

This paper will summarize the innovative design solutions developed to restore and strengthen these two historic movable bridge structures.

Ouvrages et projets

Types d'ouvrages