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Ingersoll Avenue Reconstruction

Ingersoll Avenue Reconstruction

Des Moines, IA

To support the City of Des Moines’ Complete Streets Policy and address current traffic and parking needs, McClure was selected to complete a Corridor Evaluation Traffic Study along Ingersoll Avenue from Polk Boulevard to 42nd Street. The study included traffic data collection, forecasting, multimodal transportation review, parking analysis, development and evaluation of improvement alternatives, and final recommendations. Findings revealed that the existing two-way left-turn lane was not necessary to accommodate turning movements, and peak parking demand could be met with parking limited to the north side of the corridor. The proposed improvements aimed to enhance pedestrian safety by reducing crossing distances and addressing deficiencies in the existing unbuffered bike lanes, which did not comply with the City’s policy.

Following the study, McClure advanced the recommended improvements through final design and preparation of bid documents. The design included pavement reconstruction with buffered bike lanes, permeable paver on-street parking, ADA-compliant sidewalks and driveways, cement-treated subgrade, storm sewer and subdrain improvements, water main design, retaining walls, stairs, traffic signal upgrades, and erosion control measures. Temporary easement acquisitions and plats were also developed to support construction. Successful project delivery required continuous coordination with key stakeholders including Des Moines Area Regional Transit (DART), Des Moines Water Works (DMWW), City staff, and local residents.

Highlights

  • Converted corridor from four lanes to a three-lane configuration to improve safety and traffic flow
  • Replaced head-in parking with safer, space-efficient parallel parking
  • Integrated permeable pavement within new parallel parking areas for stormwater management
  • Designed elevated bike lanes separated from the roadway for increased cyclist safety
  • Added mid-block pedestrian crossing with refuge island to enhance walkability
  • Incorporated street trees and landscaping to improve aesthetics and comfort
  • Upgraded transit accommodations to better serve bus riders along the corridor

Discipline

Transportation

Project Type

Intersection Improvements

Client

City of Des Moines, IA