The new Lowry Avenue bridge and other major transportation projects helped increase Hennepin County's overtime bill last year to $5.3 million, an increase of 8.8 percent from the year before, according to a Star Tribune analysis.
Five of the top 10 overtime earners in Hennepin County last year were Transportation Department engineers, who earned an average of $41,200 over and above their normal pay. The top engineer earned just more than $56,000 in overtime.
The Sheriff's Department paid out the most, $2.7 million, an increase of 13.6 percent. Transportation was second, paying out $1.1 million in overtime, a 9.4 percent increase.
County Administrator Richard Johnson defended the county's use of overtime, saying that it's a cost-effective way of covering short-term job needs and that no budgets needed additional funds to cover it.
"Used judiciously, it's a good management tool. You can't always control your workload," he said.
Johnson said that the Lowry Bridge project, a $104 million project that began in 2009 and is scheduled to be completed this fall, drove most of the Transportation Department's overtime. It's a 1,600-foot bridge with a basket-handle arch that has cost more and taken longer to finish than first planned.
"We've had additional inspectors on there, and I assume some of the big earners will continue in 2012," he said.
Improvements to untangle the so-called Devil's Triangle at Bottineau Boulevard and 85th Avenue N. in Brooklyn Park, both county roads, also drew a lot of overtime, he said.