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Bridge conditions in Pottawattamie County, Iowa

557 inventoried bridges · 50 rated poor · 2025 National Bridge Inventory

United States Bridge Conditions2025 National Bridge Inventory, FHWACompiled

Pottawattamie County tracks close to typical: 50 of its 557 inventoried bridges (9.0%) are rated poor, against a national rate of about 7%.

Good 39.3% · Fair 51.7% · Poor 9.0% of 557 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
South Expressway over Viaduct(rr & Streets)19767,488Poor
9TH Ave over Indian Creek19304,059Poor
5TH Ave over Indian Creek19353,013Poor
Fm-magnolia Rd over Mosquito Creek19652,949Poor
Creek Top Rd over Indian Creek19372,027Poor
North 13TH Street over Indian Creek19372,027Poor
FM over Pony Creek19661,733Poor
Railroad Hwy over Stream19521,676Poor
Tamarack Road over over BNSF RR19301,325Poor
Ia 92 over Indian Creek19381,180Poor
1ST Street over Indian Creek1936684Poor
FM over Drainage1964270Poor
7TH Ave over Indian Creek1930235Poor
L19 over I-291958229Poor
3RD Ave over Indian Creek1935179Poor
Broadway to RR over Indian Creek1937126Poor
Fm-310th Street over Iais RR1952110Poor
FM over E Nishnabotna River195860Poor
310TH Street over Stream199460Poor
Teakwood Road over Neola Creek197860Poor
Sumac Rd over Stream194945Poor
210TH Street over Pigeon Creek195240Poor
Fm-145th Street over Drainage195940Poor
Local over Graybill Creek195029Poor
Elmtree Road over Silver Creek196129Poor
Dogwood Road over Silver Creek193029Poor
Local over Graybill Creek195126Poor
470TH Street over Jordan Creek196726Poor
Missouri Avenue over Walnut Creek195326Poor
430TH Street over Stream194026Poor
FM over Mud Creek197620Poor
Road L-34 over Stream196520Poor
Rosewood Road over Keg Creek197620Poor
320TH Street over Stream197620Poor
Lombardy Road over Little Silver Creek198920Poor
432ND Street over Jordan Creek196815Poor
Rosewood Road over Second Creek194915Poor
Local over Drainage199511Poor
250TH Street over Stream194011Poor
Idelwood Road over Walnut Creek197711Poor
390TH Street over Iais RR195211Poor
Inca Lane over Pigeon Creek192411Poor
Sumac Road over Stream199211Poor
Magnolia Road over Stream198211Poor
Hemlock Ave over Graybill Creek19475Poor
Edison Lane over Jordan Creek19765Poor
Magnolia Road over Stream19615Poor
515TH Street over Stream19915Poor
220TH Street over Pigeon Creek19255Poor
510TH Street over Stream19925Poor

Busiest bridges in the county

BridgeBuiltVehicles/dayCondition
I-480 & US 6 over Missouri River & RR196653,700Fair
I-80 EB over Missouri River Rd & RR197231,550Fair
I 80 & US 6 over Little Mosquito Creek196631,100Fair
I 80 WB over Missouri Rvr Rd RR201025,250Good
I 29 SB over I-80 & I-29 Interchange201423,900Good
I-80 over Bedell Creek196523,800Fair
I-80 over Stream196523,600Fair
I 80 over Drainage Ditch196623,000Fair
I-80 over Stream196522,600Fair
I 29 over Drainage Ditch202220,600Good

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

All of Iowa: Iowa 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.