No limit.
But it is better to ensure that there is a distance of about 1M between the underground foundation of the bridge pier and the outer wall of the pipe to avoid dig the pipe during construction. .
"Comprehensive planning specifications for urban engineering pipelines" GB 50289-98
2.2.9 The minimum horizontal clear distance between engineering pipelines and between them and buildings (structures) must comply with the provisions of table 2.2.9.
It’s a painting that won’t stand up. Take a look yourself.