Queensland State Archives posted a photo:
The Courier-Mail
4 December 1953
TESTS OF CITY BRIDGE
Engineers early to-day attached delicate instruments to Victoria Bridge for tests on the bridge tomorrow.
The City Council works committee chairman (Ald. Glover) said the tests might yield valuable data for the design of the new bridge.
The bridge would be closed from 2 to 4 am to-morrow for the tests, which would be supervised by the Dean of the Faculty of Engineering (Professor J. H. Lavery) and the council works department chief engineer (Mr. C. B. Mott).
The instruments would record the reactions of the bridge to the weight of two steam rollers which would cross it.
They would indicate the stress on the bridge, which would be useful in assessing its life expectancy.
Queensland State Archives Item ID435716, Photographic material