University Drive Bicycle Facilities

Project description

University Drive currently exists as a street corridor in the City of Fairfax, Virginia. The project proposes to add bicycle facilities along University Drive between North Street and Layton Hall Drive. The proposed facilities consist of shared lane markings, bike lanes, bike lane conflict zone striping, and a bike warning box. The corridor geometry resolves to approximately 1,522 feet in length, though the extraction confidence for that figure is rated low. The project status is listed as unknown in the city project directory as of July 2026. Public-facing documents include a Preliminary Concept Design from 2021, Open House Exhibits from December 2023, and Intermediate Public Hearing Plans dated November 2024. According to the staff report published in connection with a Design Public Hearing on February 25, 2025, and recorded in the council packet dated July 28, 2026, the total project cost is estimated at $2,019,000, broken down as Engineering (PE) $295,000, Right-of-Way/Utilities (RW) $44,000, and Construction (CN) $1,680,000. That estimate is the applicant's/staff's figure, published and attributed here for reference; it is not a figure produced by this analysis.

Bike-lane corridor effects

Catchment population. The corridor's decay-weighted catchment population — computed by summing census block populations multiplied by an exponential decay factor (exp(−beta_bike × bike travel minutes to the corridor)) across a network of 32 corridor nodes using OpenStreetMap bike network data and Census 2020 block populations — is estimated at approximately 35,200 residents, with a low-to-high range of approximately 18,700 to 76,700 residents. The decay parameter beta_bike is set at a central value of 0.10 per minute, with a range of 0.05 to 0.15, calibrated to bicycle travel-time decay research (Iacono, Krizek & El-Geneidy, MnDOT 2008).

Induced bike visits. Induced daily bike visits to corridor businesses are estimated by multiplying the catchment population by a latent bike trips per resident-day rate (central 0.035, range 0.02–0.05, drawing on FHWA 2020 NHTS data) and an induced corridor visit share (central 0.10, range 0.03–0.20). The central estimate is approximately 123 induced visits per day, with a range of approximately 11 to 767 visits per day. The induced corridor visit share represents the fraction of catchment residents' latent daily bike trips newly ending at corridor businesses as a result of the facility; its bounds are calibrated to observed corridor before/after studies, including Liu & Shi (2020, NITC) and Arancibia et al. (2019, JAPA).

New annual spending. New annual spending at corridor businesses is estimated by multiplying induced daily bike visits by each corridor establishment group's share of point-of-interest counts, by the cyclist spend per trip for that group, and by 365. Spend-per-trip figures are drawn from Clifton et al. (2013, PSU/NITC), Table 3. The central total estimate is approximately $482,000 per year, with a low-to-high range of approximately $25,000 to $5,200,000. By establishment group, the central estimates are:

• Food & drink: approximately $210,000 per year (range approximately $12,700–$1,850,000), using a per-trip spend of $12 (range $8–$17)
• Convenience retail: approximately $10,000 per year (range approximately $568–$85,500), using a per-trip spend of $8 (range $5–$11)
• Other retail: approximately $262,000 per year (range approximately $11,900–$3,265,000), using a per-trip spend of $10 (range $5–$20)

Named corridor businesses. The following food and drink establishments identified along the corridor each carry an individual central estimate of approximately $7,500 per year (range approximately $454–$66,100), computed by the same method — induced daily bike visits × establishment-group POI share allocated evenly within the group × cyclist spend per trip × 365: Old Dominion Pizza Company, French Quarter Brasserie, Foster's Grille, 21 Great American Bistro, and One Bar and Grill.

Calibration and framing. A diagnostic implied corridor sales uplift — new corridor spending divided by a rough baseline of corridor sales — is estimated at approximately 0.84% (range approximately 0.04%–9.0%). The observed range of corridor natural experiments (such as the Minneapolis Central Avenue and Seattle Broadway studies cited in the induced-visit-share calibration) shows food-service sales or employment gains generally in a positive-to-moderate range, providing context for interpreting where these screening estimates fall. All figures in this section are screening estimates: they rank plausible magnitudes with sensitivity bounds and are not predictions of actual business revenue outcomes.

Not evaluated in this version

Fiscal impact (tax revenue and municipal expenditure effects), broader economic impact (employment multipliers, supply-chain effects), trail-facility analysis (not applicable — the trail module applies to park/trail projects and was not computed for this street_multimodal project), network connectivity analysis, environmental and health co-benefits, and comparable-places benchmarking are all deferred and were not computed in this version of the analysis. Those topics would require additional modules and data inputs beyond what is available here.