The Engineering Department designs, surveys, and inspects the construction of streets, bridges, storm drains, sanitary sewers, water mains, traffic control devices and other City infrastructure in the right-of-way and maintains the City’s traffic signal network.


Capital improvement planning and budgeting for public works projects including streets, water, sewer, and storm drainage infrastructure.

Conducting plan reviews for both municipal infrastructure designs for new developments and private site designs to ensure compliance with City standards and compatibility with existing facilities

Coordinating with the Illinois Department of Transportation on state-related roadway projects.

Maintaining and updating the City's Geographic Information System (GIS).

Preparing construction plans, bidding and contract documents, and providing construction oversight for capital improvement projects.

Providing maps, records and other documents related to public infrastructure to the public and other departments in the City.

Providing technical assistance to residents and potential developers with regard to civil engineering-related issues.

Providing technical support services for other City departments:

  • Streets

The City of Moline has 195.45 linear miles of roadway it maintains. This equates to over 700 lane miles. This does not include alleys or routes of other jurisdictions that traverse through Moline like Route 92 or 19th Street south of Avenue of the Cities. There are 107 traffic signal locations in Moline, the majority being signalized intersections along with several traffic controlled crosswalks. This staff and activities related to signals is managed by Engineering.  Pavement types are a combination of sealcoat, bituminous and concrete.

  • Water

The City has 240 miles of water main and 17,652 water services. Of these, 15,813 are residential. There are 5,000 lead service lines in that number. Moline is working aggressively beginning in 2021 to remove lead service lines from the network. Moline is responsible for all components of the service lines from the main to the curb box in the ROW. Some water main and piping still dates back to the 1800’s.

  • Sanitary Sewer

The City has 227 miles of sanitary sewer and 16,600 sewer laterals. Like water services, the City has responsibility for sewer laterals from the main to where the ROW meets the customer’s property line. Because of the topography of Moline, the City has many dead ends and uses 15 sanitary sewer pumping stations to convey wastewater to one of the City’s two treatment plants. The City has three National Pollutant Discharge Elimination System permits which is unique for a community the size of Moline.

  • Stormwater

The City uses a combination of ditches, drainage ways and detention along with curb and gutter incorporated with a piped storm sewer network to manage storm water. There is 175 miles of storm water piping ranging in size from 4” to 84”. The majority of the City is  positioned between two rivers, the Rock and the Mississippi and there are 6 public storm  stations in the network that assist in getting the stormwater conveyed to their river  destinations.