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Polk County, IA Sidewalk & Pedestrian Rules: Obstruction Rules (2026)

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

Key Facts

Governing section
Ch. 46, § 46.23.4
Approval authority
Polk County Engineer
Enforcement tool
Removal plus special tax assessment
Related fill ban
§ 46.23.2, no right-of-way filling
Cross-referenced nuisance
§ 2-5(l), road/street obstruction

Summary

Unincorporated Polk County has no municipal sidewalk network; its obstruction rule instead covers the public road right-of-way. Chapter 46, Section 46.23.4 requires the Polk County Engineer's written approval before adding landscape walls, plantings, stones or anything else near an entrance, and bans private use that obstructs or encumbers the right-of-way.

City-specific rules exist: Des Moines has its own obstruction rules rules that differ from Polk County's county-level regulations. If you live in Des Moines, check the city-specific page instead.

No changes in the entrance, including landscape walls, plantings, stones, or any object deemed to be considered an obstruction or hazard to vehicular traffic, or its location shall be undertaken without the prior written approval of the Polk County Engineer. Private property may not be used so as to obstruct or encumber the public road right-of-way, or interfere with the safety, comfort and rights of public road users. The County shall have the right to remove said obstruction or modifications and assess the cost thereof as a special tax against the abutting property and collect the same according to Iowa law.

Full Breakdown

Polk County's Entrance and Driveway Ordinance, Chapter 46, governs how abutting property owners may use the strip of public right-of-way along county roads, the closest equivalent unincorporated Polk County has to a sidewalk-obstruction rule. 4, "Obstructions/Modifications," requires the Polk County Engineer's prior written approval before any change to an approved entrance, including landscape walls, plantings, or stones, or any object that could be considered an obstruction or hazard to vehicular traffic. The same section separately bars using private property so as to obstruct or encumber the public road right-of-way, or interfere with the safety, comfort and rights of public road users, a broader ban that reaches items placed in the right-of-way even away from a driveway entrance.

1 puts the Public Works Department in charge of entrance standards, including maximum width, for connections to open-ditch roadways. The Health Nuisance Regulation backs this up on the health-nuisance side: Section 2-5(l) separately lists an obstruction or encumbrance by fence, building or otherwise of a public road, private way, street, alley, common, landing place, or burying ground among the nuisances the county can abate through its administrative hearing process or a civil action.

Violations & Fines

The county can remove an unauthorized obstruction or modification itself and assess the removal cost as a special tax against the abutting property, collected under Iowa law, per Section 46.23.4. Where the same encroachment also qualifies as a health nuisance under Section 2-5(l), it can instead or additionally be abated through the administrative hearing or civil-action process in Article 2 of the Health Nuisance Regulation.

Frequently Asked Questions

Can I put a decorative wall or landscaping near my driveway entrance on a county road?
Not without the Polk County Engineer's prior written approval. Section 46.23.4 specifically lists landscape walls, plantings and stones as changes that require approval before installation near an approved entrance.
What happens if I obstruct the county's road right-of-way without approval?
The county can remove the obstruction or modification itself and assess the cost of removal as a special tax against your property, collected the same way as other special assessments under Iowa law, per Section 46.23.4.
Does unincorporated Polk County regulate sidewalks directly?
Unincorporated Polk County has no municipal sidewalk system to regulate; its obstruction protections apply to the public road right-of-way along county roads instead, chiefly through Chapter 46's entrance and driveway rules.
Can filling in a roadside ditch get me in trouble?
Yes. Section 46.23.2 bars filling in the right-of-way beyond what is necessary to construct an approved entrance, and separately bars excavation within the traveled portion of the roadway.

Sources & Official References

Other rules in Polk County

All Polk County rules

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