In Design: Elden Street Widening and Underground Utilities Duct Bank in the Town of Herndon

Cost and schedule ►

Public outreach ►

Project Limits

Underground Utilities Duct Bank

This project will construct an underground utilities duct bank to replace the existing overhead utilities along about a mile of Elden Street between Monroe Street and Fairfax County Parkway. Construction on the duct bank is scheduled to begin in early 2023.

Elden Street Widening

This project will widen about a third of a mile of Elden Street from four to six lanes between Herndon Parkway and Fairfax County Parkway.

Other improvements along Elden Street include:

  • Adding bike lanes from Monroe Street to Herndon Parkway
  • Adding cycle tracks from Herndon Parkway to Fairfax County Parkway that combine the user experience of a separated path with the on-street infrastructure of a conventional bike lane
  • Replacing the box culvert over Sugarland Run with a new bridge to provide better stream flow and reduce potential flooding
  • Pedestrian enhancements
  • Landscaping and planted medians where feasible

Construction on the Elden Street Widening improvements is scheduled to begin in early 2025.

Elden Street averages about 25,000 vehicles a day within the project limits.

Estimated Costs
Preliminary Engineering: $6.9 million
Right of Way Acquisition and Utility Relocation: $13.3 million
Underground Utilities Duct Bank Construction: $12.7 million
Elden Street Widening Construction: $24.4 million
Total: $57.3 million

The projects combined are financed with federal, state, regional and local funding, including Smart Scale, Revenue Sharing and Northern Virginia Transportation Authority funding.


This project aims to reduce congestion, improve safety and enhance access to and from Fairfax County Parkway for drivers, bicyclists and pedestrians.

Major Milestones 

Design Public Hearing - October 2016
Design Approval - October 2017
Begin Right of Way Acquisition - May 2019
Advertise Underground Utilities Duct Bank for Construction - June 2022
Begin Underground Utilities Duct Bank Construction - Early 2023
Begin Elden Street Widening Construction - Early 


Contact Info:

Hamid Misaghian, P.E.
Location & Design

Minwoo Ha, P.E.
Preliminary Engineering

Project Photos

Other relevant links:

Design Public Hearing - Oct. 2016 (Ad)

Typical Section Sheets - August 2016

Categorical Exclusion - February 2015

Phase: Underground Utilities Duct Bank: Coming Soon

Elden Street Widening: In Design

UPC: 50100, 120508

State ID: U000-235-110, B606, C501, P101, R201

Federal ID: HPD-5401 (455), RSTP-5B01 (036), NHPP-5B01 (261)

Lat/Long: 38.967631, -77.374576

Locality: Fairfax

1 / 1
list of photos
Existing Elden Street/Laurel Way intersection

Page last modified: March 25, 2023