What kind of characteristics must one have to be a good civil engineer?

First of all my best wishes to you all on "Happy Eid"! A good Civil engineering requires good mathematics, design, and science skills.having a "big picture" mentality, creativity, the ability to function as a member of a team, the ability to work without supervision and to handle high levels of responsibility, the ability to clearly and concisely communicate your ideas both verbally, and through the use of writing and images, are all important, well-rounded features to ensure a successful civil engineering career.You should also be ready to work for long hours.
You need to be result oriented, have good leadership qualities, good communication skills and commitment towards work.
But most of all you should not hesitate to voice your opinion or the work will suffer.

One line answer.
Any good engineer should have logical thinking .....

Civil engineer must understand priciples of civil engineering like structures & concrete and must have good engineering sense and understand concepts of work.

Civil engineer should give simple solution for complicated problems.

1 self motivation 2 integrity 3 dependability

Civil Engineer have different roles to play in the area of their Expertise...such as Structural Engineering, Construction Execution, Surveying, Geotechnical...so my idea of a Good Civil Engineer is a person who is Best in his area of Expertise.

One who can foresee and resolve issues before they come up. This includes good logical thinking, ownership, leadership and ability to give good out of best.

analysis Simplified every thing such as problems and dealing

deep studies before reaction

should have good logic,good listener,judging ideas put forward by people is a main thing as most of the people has an idea about the subject,know the fundamentals

Aller toujours au bout de ses convictions

Having knowledge, oriented, deligent and updated.