Structural Engineering & Design Featured Projects

Hutchison Engineering, Inc. was selected by the Brown County Highway Department to provide Phase I and II engineering services for the replacement of the structure carrying Township Road 208 over a Branch of Little Creek. The project is located approximately 4.5 miles north - northeast of Versailles, Illinois. Township Road 208 (1550 E Road) is classified as a rural local road with an average daily traffic of 175. This project involved the removal of the existing single-span structure consisting of a reinforced concrete deck on steel channel beams supported by closed concrete abutments. The existing structure was 21 feet in length and 17 feet in width and showing signs of distress in the superstructure and substructure elements. This structure was experiencing a significant amount of scour around the abutments and along the approach roadway from the south. Little Creek flows parallel to Township Road 208 prior to its confluence with the project stream immediately downstream of the project structure. The replacement structure is a single-span precast, pre-stressed, 21-inch concrete deck beam structure supported on concrete spill-thru abutments. The new structure is 51 feet in length and 24 feet in width with no skew. The project also included channel and roadway front slope rip rap protection in the area where Little Creek parallels Township Road 208. The project was constructed under full road closure.

Hutchison Engineering, Inc. was selected by the Morgan County Highway Department to provide Phase I and II engineering services for the replacement of the structure carrying Township Road 174 (Arcadia Road) over Snake Creek Branch. The project is located approximately 4.5 miles north of Jacksonville, Illinois. Township Road 174 is classified as a local road with an average daily traffic of 100. This project involved the removal of the existing single-span structure consisting of a reinforced concrete deck on steel girders supported by closed timber abutments and timber piling. The existing structure was 34 feet in length and 26 feet in width and showing significant signs of distress in the substructure elements. In particular, this structure was experiencing significant to complete section loss of the timber abutment back walls and to a lesser extent the timber piling. The abutments were also experiencing rotation resulting in improper seating and bearing of the steel beams on the abutment caps. The replacement structure is a single-span precast, prestressed, 33-inch concrete deck beam structure. The structure is supported on concrete spill-thru pile bent abutments. The new structure is 79 feet in length and 28 feet in width with no skew. The project was constructed under full road closure.

HEI provided an initial survey and design for the emergency embankment repair of the existing slope wall along CH 2 near Bernadette, IL for the Fulton County Highway Department. The project consisted of removing the fore slope, benching slope, installing a pipe underdrain system, reconstructing fore slope and other collateral work.

HEI was utilized as a sub-consultant by the Knox County Highway Department to provide structural engineering services including preliminary bridge design and hydraulic report, permitting, development of plans, specification and estimates for two culvert locations. The culvert replacements were part of a 4-mile reconstruction of CH 4. Both culvert locations are carrying tributaries of Walnut Creek under CH 4. The designs consisted of cast-in-place, reinforced concrete, and multi-cell box culverts.

HEI provided Phase I and Phase II services for the reconstruction and realignment of CH 1 and CH 11 in Woodford County from CH 2 to IL Rte. 89. The reconstruction consisted of a new horizontal and vertical alignment with 12” aggregate base course, 6” HMA pavement, aggregate shoulders, culverts, and other collateral improvements. Due to the use of federal funding, the HEI staff had to coordinate with IDOT to produce PS&E for a state letting.

HEI was selected by the LaSalle County Highway Department to provide preliminary engineering and construction oversight services for the replacement of two multi-barrel box culverts in Streator, IL. Both culverts are located on Prairie Creek one carrying Bazore Street and the other carrying Division Street.

HEI was selected by Knox County to provide preliminary engineering and material testing services including the preparation of a project development report, plans, specification, estimates, and nuclear density testing for the bridge replacement and roadway realignment on CH 11.

HEI was selected by the Kendall County Highway Department to provide Phase I and Phase II preliminary engineering services for the replacement of the bridge carrying River Rd. over Blackberry Creek.

HEI was selected by the Plainfield Township Highway Department to provide preliminary engineering and construction oversight services for a new bridge on a new alignment carrying Renwick Rd. over the DuPage River. The project is undertaken to provide a modern bridge that can meet current geometric policies and provide the desired load carrying capacities.