Pros
Excellent training especially for young engineers. Get to work on huge iconic jobs. Salary is very competitive if not better then most companies and also a benefit package not matched by many. The training recieved here may be one of if not the best in the industry. Having this company on your resume will look very good in the future if you choose not to work for this company down the road. Every other construction company in the US and canada will recognize you as a strong canidate for employment down the road based on the work and training you were exposed to at Kiewit.
Cons
Get ready to work some serious hours. Salary is good but hourly rate would actually end up being fairly low due to no overtime or extra compensation for going above and beyond.