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Bridge conditions in Millard County, Utah

72 inventoried bridges · 2 rated poor · 2025 National Bridge Inventory

United States Bridge Conditions2025 National Bridge Inventory, FHWACompiled

Millard County tracks close to typical: 2 of its 72 inventoried bridges (2.8%) are rated poor, against a national rate of about 7%.

Good 11.1% · Fair 86.1% · Poor 2.8% of 72 bridges

Bridges rated poor

Every bridge in the county with a poor rating, busiest first. Poor means a major component is rated 4 or lower on FHWA's 0-9 scale; it is a repair flag, not a closure notice.

BridgeBuiltVehicles/dayCondition
Chalk Creek Road over S. Fk. Chalk Creek196560Poor
County Road over Central Utah Canal193538Poor

Busiest bridges in the county

BridgeBuiltVehicles/dayCondition
I-15 (SR-15)NB&SB over Chalk Creek197224,744Fair
I-15 (SR-15)NB&SB over Chalk Creek Overflow Ch.197224,744Fair
I-15 (SR-15) Nbl over SR-99 Intchg. X-road197224,744Fair
I-15 (SR-15) Sbl over SR-99 Intchg. X-road197224,744Fair
I-15 SB over Dog Valley Access Rd202223,000Good
I-15 (SR-15) Nbl over Co. Rd. Inter X-road196622,567Fair
I-15 (SR-15) Nbl over Co. Rd. Inter X-road197222,567Fair
I-15 (SR-15) Sbl over Co. Rd. Inter X-road197222,567Fair
I-15 NB over Wildlife Crossing202120,000Fair
I-15 SB over Wildlife Crossing202120,000Fair

Source: FHWA National Bridge Inventory, 2025. Counts cover inventoried highway bridges over 20 feet; ratings are reported by the state DOT.

All of Utah: Utah bridge conditions by county · every download on the data page.

Background: how bridge ratings work · what "poor" and "structurally deficient" actually mean · how often bridges are inspected.