Skip to main content
CityRuleLookup

Modesto, CA Sign Regulations: Digital Billboards (2026)

Significant Restrictions
Compiled from the official code textEditor Martyn O'NeillLast verified September 2026

Key Facts

Citywide cap
Seven digital freeway billboards maximum
Sign spacing
2,500 feet minimum between digital billboards
Max height
60 feet for new digital billboards
Max face area
700 square feet per display face
Removal ratio
4 existing billboards removed per new digital sign
Permit required
City Council conditional use permit
Location limit
Within 660 ft of Highway 99, 300 ft from residential

Summary

Digital freeway billboards in Modesto are allowed only as relocations or conversions of existing billboards along State Highway 99, per Section 10-6.108(f)(3) of the Municipal Code. The City Council must approve a conditional use permit for each one, and citywide, no more than seven digital freeway billboards may operate at once, spaced at least 2,500 feet apart.

(3)Digital Freeway Billboards.(i)Purpose and Designation. Digital billboards may be permitted along Freeway 99 only as billboard relocations or as conversions of an existing billboard in place.(ii)Conditional Use Permit. Digital freeway billboards must obtain a conditional use permit approval which requires a recommendation by the Planning Commission to the City Council and final approval authority by the City Council...(iii)Development Standards...1)Location. A digital freeway billboard shall be located within 660 feet of State Highway 99 but shall not be located on any parcel with a residential zone or use, and shall be a minimum of 300 feet from any parcel with a residential zone or use.2)Number of Faces. A digital freeway billboard may consist of, at most, two (2) digital display areas.3)Height. The maximum height shall be 60 feet.4)Area. The maximum area of each digital display area is 700 square feet.4.5)Maximum Number. There shall be a maximum of seven (7) digital freeway billboards within the City limits.5)Distance between Signs. No digital freeway billboard shall be located within 2,500 feet of any other digital freeway billboard within the City limits.

View official code

Official source re-checked September 7, 2026: no newer edition of the code had been published (publisher’s edition: Code of Ordinances: Supplement 71).

Full Breakdown

108(f)(3) of the Modesto Code of Ordinances creates a narrow, tightly capped pathway for digital freeway billboards: a new or converted digital billboard is permitted only as a relocation or conversion of an existing billboard, never as a net-new structure, and only along State Highway 99. Approval requires a conditional use permit that starts with a Planning Commission recommendation and ends with final City Council approval; if either body denies the permit, the applicant receives a written statement of the reasons. 703, will not create a traffic hazard, will conform to the state Outdoor Advertising Act, and will deliver a public benefit in aesthetics, safety, or economic revitalization that outweighs light pollution or visual impacts.

The development standards are specific: a billboard must sit within 660 feet of Highway 99 and at least 300 feet from any residential parcel, may show at most two faces at no more than a 45-degree interior angle, may not exceed 60 feet in height (existing nonconforming billboards keep their height if converted), and each display face is capped at 700 square feet. The City limits the whole program to seven digital freeway billboards, each at least 2,500 feet from the next. For every new digital billboard installed, the applicant must permanently remove at least four existing billboard structures within Modesto's Sphere of Influence, and the City may negotiate an operating agreement trading community benefits, such as graffiti abatement funding, for adjusted removal ratios.

Violations & Fines

Erecting or converting a digital freeway billboard without a City Council-approved conditional use permit, exceeding the 60-foot height or 700-square-foot face limits, operating more than seven digital freeway billboards citywide, or placing one within 2,500 feet of another violates Section 10-6.108(f)(3). The Community and Economic Development Department can deny or revoke the conditional use permit, and noncompliant billboards are subject to code enforcement removal action.

Frequently Asked Questions

How many digital freeway billboards can operate in Modesto?
Modesto caps the digital freeway billboard program at seven signs citywide, all located along State Highway 99, per Section 10-6.108(f)(3)(iii)(a)(4.5) of the Municipal Code. No new digital billboard may be approved once seven are operating, and each new one must be a conversion or relocation of an existing billboard, not a net-new structure.
Do old billboards have to come down for a new digital billboard to go up?
For every digital freeway billboard installed, the applicant must permanently remove at least four legally existing billboard structures within Modesto's Sphere of Influence before the digital billboard begins operating, per Section 10-6.108(f)(3)(iii)(b). A billboard being refurbished into a digital freeway billboard can itself count as one of the four required removals.
Can a brand-new digital billboard be built along Highway 99?
No, a digital freeway billboard may not be built as a brand-new structure in Modesto. Section 10-6.108(f)(3)(iii)(a) allows digital billboards only as relocations of an existing billboard or conversions of a legally existing traditional billboard already in place along State Highway 99, subject to City Council conditional use permit approval and the program's seven-billboard citywide cap.

Sources & Official References

Other rules in Modesto

All Modesto rules

California rules heatmap·Compare Modesto to another location·View the California sign regulations overview

Get notified when Digital Billboards in Modesto, CA changes

We'll email you the moment we detect a change in the code. No spam, unsubscribe anytime.

We'll never sell or share your email. One-click unsubscribe in every email.

See something wrong?

Help us keep this page accurate. If you notice an error or outdated information, let us know.