According to practice chief Stephen Spence, his joint bid with C Spencer and Gifford Consulting ( pictured) was 'ruled out' following an interview with contest organisers, regeneration company Hull Citybuild.
The decision paves the way for the other finalists, McDowell & Benedetti with engineers Alan Baxter & Associates, and a collaboration between Birdjohnson Associates, Halcrow and Volker Stevin, to steal victory.
The international competition to find a designer for the new bicycle and pedestrian bridge in the heart of the city was launched last May.
An overall winner was expected to be announced in February, following a public exhibition showcasing all three shortlisted schemes. However, it is understood the two remaining designers were asked to 'further develop' their submissions and the victorious team is not due to be unveiled until later next week.
The new crossing will link the East Bank area - the site of a proposed £88 million waterfront mixed-use development - with Hull's city centre.