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City adopts transportation capital improvement plan and traffic‑impact fee ordinance; developers, builders and some councilors raise concerns
Summary
Council adopted a transportation capital improvement plan and a new traffic impact fee (TIF) program aimed at making growth pay for added roadway capacity; the ordinance sets fees for dozens of land‑use types and was adopted after debate about housing affordability and effects on small businesses.
The City Council adopted a consolidated Transportation Capital Improvement Plan (CIP) and a Traffic Impact Fee (TIF) program intended to replace the city’s prior mitigation program and collect developer‑paid contributions for a prioritized list of roadway capacity projects.
Consultants described the process and findings: the CAATS (Caldwell Area Transportation System) plan (completed 2021–2023) identified 54 roadway/intersection capacity projects with total estimated costs near $340 million, roughly $211 million of which the consultant judged eligible to be funded by traffic impact fees under Idaho law for the city’s 20‑year horizon. The fiscal model converts system costs to a per‑land‑use schedule using Institute of Transportation Engineers trip rates, assumed trip lengths, a network adjustment and a vehicle‑miles‑traveled (VMT) cost factor that ties fee revenue to CIP costs.
Under the adopted schedule, typical single‑family residential units were estimated at about $4,000 per dwelling unit (consultant estimate), while many commercial uses show much higher fees per unit of square footage; the consultant said fees differ by land‑use because some uses generate more peak‑hour trips and longer trip distances. The program will be updated at least every five years under Idaho law.
Supporters and staff said the TIF program is more transparent and equitable than the older mitigation system, which had thresholds and ad‑hoc credits that allowed some projects to avoid contributions. City staff and the consultant said the new program makes future funding for specific, systemwide capacity projects predictable.
Opponents and some councilors urged caution. Rob Pilate, chair of the city advisory committee, sent a written letter urging careful review: he warned the fees could increase housing costs and estimated that the proposed fees could price some local buyers out of the market. Pilate’s letter gave an analytical example and urged the council to weigh broader policy outcomes. Councilor Williams and other councilors also expressed concern that fees on small commercial operations could discourage start‑ups; a councilor pointed to a published example in the city packet estimating a coffee‑shop‑style tenant could face about $20,684 in TIF charges for certain reuse projects.
Committee members and others said the program is required by Idaho code to be updated at least every five years and that impact fees can only be spent on capacity projects tied to future development, not on maintenance or existing deficits.
After discussion, the council voted to adopt the ordinance amending the municipal code to add the CIP and traffic impact fee program and to approve the fee schedule. The recorded vote was 5 in favor, 1 opposed (Councilor Williams), and the ordinance will be implemented through the city’s building‑permit process; fees collected will fund the CIP projects identified in the study. Councilors asked staff to track affordability implications and noted the program will be reviewed on a scheduled cycle.
