Eltayeb Elrayah Khalafalla, Ali Hussein Mohammed Ali


The Blue Nile steel bridge over the Blue Nile river in Khartoum State has been in service for over 109 years. The bridge crosses the river at right angles, connecting Khartoum and Khartoum North. The bridge has a total length of 559 m and an overall width of 16.05 m between centers of trusses. Many strength assessment studies for the structural condition
of the bridge were carried out. The first recorded study being in 1960, followed by studies on 1975, 1981, 1994, 2004, 2008 and 2009. All these studies revealed serious problems in some elements of the bridge. These elements include superstructure, bearings and substructure. All studies recommended repair and rehabilitation of the affected parts of the bridge.A rehabilitation program began on October 2017 to extend the life of the bridge for another 50 years.This paper includes a literature review on strength assessment of the bridge members, the method of selecting the rehabilitation strategy for the bridge along with the methodology by which main members were identified for strengthening or replacement. The strengthening of the existing side walk to be converted into roadway for private small cars is presented. The need to respect the appearance of the main members of the bridge to meet historical protection was respected. Due to the congestion created by closing the bridge, the need arise to reopen the bridge as quickly as possible. This dictated
using strategies and construction methods to achieve the goal of opening the bridge to traffic partially in short time. These strategies and methodologies are presented.
Lessons learned during assessment, design and construction stages are outlined, and recommendations are presented for the strength assessment of corroded members based upon results on the literature survey and experience obtained during execution of the rehabilitation of the bridge.


Rehabilitation; Blue Nile; Bridge; strength; assessment;strengthening;replacement and historical bridge.

Full Text:



The Engineer Journal, "The Development of the

Sudan", Pages 271-293, March, 19-1915.

Coode and Partners of UK, Report on, "The

Examination of Coal Transporters and Bridges", All

Sections, July 1960.

Egyptian Bridge Consultant, "Report on Structural

Conditions of Six SRC Steel Bridges", 1975.

Ph.D Thesis on, "Fatigue Resistance for Blue Nile,

White Nile and Atbara Bridges", Submitted to

Lehigh University, Bethlehem, Pennsylvania, USA,

Report of EPAC Company on, "The Investigations

of Four Main Railway Steel Bridges, Phase [1]:

Preliminary Investigations", Submitted June 1994.

Turkish Company [PGM], "Report on Inspection of

Blue Nile Bridge", 2004.

Domier Consulting, "Feasibility Study Assessment

of The Condition of The Blue Nile Bridge -

Khartoum/Sudan", Berlin, August, 8-2008.

Beijing University of Civil Engineering and

Architecture (BUCEA), "Report on The Assessment

of the Blue Nile Steel Bridge Project including

inspection, evaluation and prediction of structural

fatigue and residual life", Beijing, 2009-2010.

Harbin institute of Technology, "Report on

Structural Inspection and Evaluation of The Blue

Nile Bridge", China, Harbin, 2011.

Department of Public Works and Highways, Japan

International Corporation Agency, "Inspection

Manual for Steel Truss Bridge - Phase II:

Improvement of Quality Management for Highway

and Bridge Construction and Maintenance", Japan, 2014.

China Heilong Jiang Roads and Bridge Construction

Company, " Report on Maintenance and Strengthening of The Blue Nile Steel Bridge -

Design Report and Drawings", Harbin, 2017.

Contract for The construction of a Bridge over the

Blue Nile at Khartoum to be built by Cleveland

Bridge and Engineering Company Ltd. Dralington,

England. Philips and Conner Printers, Tothill Street,

West mimister, 1907.


  • There are currently no refbacks.