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Every bridge in Mahaska County, Iowa

Name: Every bridge in Mahaska County, Iowa
Creator: Bridge Report Card
License: https://creativecommons.org/publicdomain/zero/1.0/

221 inventoried bridges, busiest first

United States Bridge Conditions2025 National Bridge Inventory, FHWACompiled August 20, 2026

Mahaska County, Iowa, has 221 bridges in the 2025 National Bridge Inventory: 65 rated good, 89 fair, and 67 poor (as of August 20, 2026).
This index lists every one of them, busiest first; each links to its own condition record.

Bridge	Built	Vehicles/day	Condition
US 63 over Nenebec Creek	1998	12,500	Fair
Ia 163 over Muchakinok Creek	1997	12,200	Fair
Ia 163 over Little Muchikinock Creek	1995	7,800	Fair
US 63 over Little Muchakinock Creek	1963	6,600	Fair
Ia 92 over Spring Creek/pedestrian	1958	6,400	Fair
US #63 over Muchakinock Creek	2001	6,350	Good
US 63 over Stream	1982	6,350	Good
NB US 63 over Muchakinok Creek	1997	6,250	Good
SB US 63 over Muchakinok Creek	1997	6,250	Good
US 63 SB Ia 163 EB over Muchakinock Creek	2001	6,250	Good
US 63 over Trib. to Muchakinock	1997	6,250	Good
US 63 over Middle Creek	1961	4,320	Fair
Eb/sb Ia 163 over over UP RR	1996	3,900	Good
Wb/nb Ia 163 over over UP RR	1997	3,900	Good
US 63 over UP RR	2008	3,310	Good
US 63 over South Skunk River	1979	3,250	Fair
Ia 92 over St Josephs Creek	1979	3,240	Good
Ia 92 over South Skunk River	1985	2,900	Fair
Ia 92 over Stream	1958	2,900	Fair
Ia 92 over Muchakinock Creek	2021	2,840	Good
Ia 92 over North Skunk River	2022	2,800	Good
US 63 SB over Ia 163	1996	2,750	Fair
Eb/sb Ia 163 over Ia 92	1996	2,700	Good
Wb/nb Ia 163 over Ia 92	1996	2,700	Good
Ia 23 over Tributary of Cedar Creek	2023	2,350	Good
Old Ia 102 over Buckley Creek	1967	2,340	Poor
Old Ia 102 over South Skunk River	1990	2,340	Good
Indian Way over Ia 163	1996	2,320	Good
Ia 23 over Stream	1928	2,170	Fair
US 63 over UP RR	1985	2,170	Fair
Ia 23 over Cedar Creek	1969	2,130	Fair
Old Ia 102 over Branch Middle Creek	1961	1,550	Fair
Old Ia 102 over Middle Creek	1962	1,550	Fair
US 63 over Buck Creek	1985	1,500	Fair
US 63 over North Skunk River	1985	1,500	Good
FM over Buckley Creek(middle Br)	1984	1,130	Good
FM over E Br Buckley Creek	1983	1,130	Fair
FM over Little Creek	1967	1,130	Fair
Merino Ave over US 63	2002	1,050	Good
Local over Spring Creek	1986	840	Fair
Local over Des Moines River	1987	710	Fair
Local over Drainage	1987	710	Fair
Local over Muchakinock Creek	1987	710	Fair
FM over Dm River	2010	620	Good
FM over Drainage	2001	620	Good
FM over Muchakinock Creek	2001	620	Good
FM over S Coal Creek	1994	610	Fair
FM over Turkey Run	1983	610	Fair
FM over Turkey Run	1994	610	Fair
SR G 55 over US 63 & Ia 163	1996	530	Good
FM over Cedar Creek	1963	470	Poor
FM over S Skunk River	1967	430	Poor
FM over Cedar Creek	2000	370	Fair
FM over Middle Creek	1990	370	Fair
FM over N Skunk River	1966	370	Poor
FM over N Skunk River Overflow	1961	370	Poor
FM over Stream	1962	370	Fair
FM over over UP RR	1961	370	Poor
FM over Snyder Creek	1982	330	Fair
FM over South Skunk River	1982	330	Fair
FM over Middle Creek	1991	320	Good
FM over N Skunk River	1991	320	Good
FM over N.skunk River Overflow	1991	320	Good
263RD St over Ia 163	1995	300	Good
FM over Middle Creek	1971	300	Fair
FM over Small Stream	1979	300	Fair
FM over Mitchell Creek	1972	290	Fair
FM over So Skunk River	1956	290	Poor
Local over Little Muchakinock	1965	290	Poor
Local over Little Muchakinock Creek	1988	210	Good
FM over Little Muchakinock Creek	2007	200	Good
FM over Moon Creek	1965	190	Fair
Local over Muchakinock Creek	1949	180	Poor
FM over Black Oak Creek	2003	170	Good
FM over St Joseph Creek	1999	160	Good
FM over Cedar Creek	1971	150	Fair
FM over Painter Creek	2010	150	Good
Newport Ave over Spring Creek	2006	150	Good
FM over Buckley Creek	1956	140	Poor
FM over N Skunk River	1951	140	Poor
245TH St over Drainage	2003	131	Good
Local over Buckley Creek	1929	131	Poor
Local over Drainage	1958	131	Poor
FM over Spring Creek	2003	130	Good
FM T-43 over S Skunk River	1977	120	Fair
FM over Cedar Creek	1957	120	Fair
G63 305TH St over Drainage	2016	120	Good
Local over Spring Creek	1965	120	Poor
N 17TH St over Branch of Spring Creek	2020	120	Good
100TH St over S.english River	1997	110	Good
FM over Bluff Creek	1957	110	Fair
FM over Bluff Creek	1991	100	Good
FM over S Coal Creek	1954	100	Fair
Local over Drainage	1963	100	Poor
Local over Drainage	1957	100	Poor
Local over Muchakinock Creek	1957	100	Poor
255TH St over Spring Creek	2012	90	Good
Elba Ave over Muchakinock Creek	2016	90	Good
FM over Muchakinock Creek	2007	90	Good
Local over Painter Creek	1951	90	Poor
Local over Spring Creek	1964	90	Poor
Merino Ave over Drainage	2012	90	Good
FM over Coal Creek	1948	80	Fair
FM over Drainage	1989	80	Good
FM over Muchakinock CR	1960	80	Fair
Local over Drainage	1998	80	Good
Local over Drainage	1973	80	Poor
Local over Drainage	1950	80	Poor
Local over Muchakinock Creek	1974	80	Fair
Local over Muchakinock Creek	1952	80	Fair
Local over Olive Branch Creek	1956	80	Poor
Local over S Coal Creek	1951	80	Poor
Local over St Josephs Creek	1953	80	Fair
Local over Cedar Creek	1963	71	Fair
Local over Coal Creek	1900	71	Poor
Local over Drainage	1957	71	Poor
Local over Muchakinock Creek	1985	71	Good
Local over N Coal Creek	1956	71	Poor
Local over N Skunk River	1977	71	Fair
Local over Price Creek	1970	71	Poor
Local over Spring Creek	1948	71	Poor
Local over St Joseph Creek	1959	71	Poor
FM over Buckley Creek	1951	70	Poor
G77 335TH St over Cedar Creek	2022	70	Good
FM over Bluff Creek	1970	60	Fair
FM over Drainage	1990	60	Fair
FM over Middle Creek	1971	60	Fair
Local over Bluff Creek	1971	60	Fair
Local over Drainage	1955	60	Fair
Local over Drainage	1960	60	Poor
Local over Middle Creek	1971	60	Fair
Local over Muchakinoch Creek	1951	60	Poor
Local over N Coal Creek	1950	60	Fair
Local over Pleasant Creek	1998	60	Good
Local over S Coal Creek	2005	60	Fair
Local over Stream	1953	60	Poor
FM over Ballinger Creek	2010	50	Good
G73 (325TH St) over Bluff Creek	2012	50	Good
Local over Bluff Creek	1948	50	Poor
Local over Buckley Creek	1994	50	Good
Local over Drainage	1988	50	Fair
Local over Drainage	1955	50	Fair
Local over Little Bluff Ck	1955	50	Poor
Local over Middle Creek	1971	50	Fair
Local over Muchakinoch Creek	1951	50	Poor
Local over Olive Branch Creek	1971	50	Fair
Local over St Joseph Creek	2003	50	Good
Local over St Joseph Creek	1994	50	Good
Local over Stream	1983	50	Good
Local over Stream	1965	50	Fair
Local over Turkey Run	1948	50	Poor
290TH St over Drainage Ditch #2	1900	45	Poor
G15 110TH St over Elk Creek	2021	45	Good
Local over Drainage	1948	45	Poor
Local over Drainage	1951	45	Poor
Local over Drainage	1950	45	Poor
Local over M Br Buckley Creek	1950	45	Poor
Local over S Coal Creek	1971	45	Fair
Local over Stream	1953	45	Poor
FM over Drainage Ditch #2	1951	40	Poor
Local over Drainage	1955	40	Poor
Local over Middle Creek	1965	40	Poor
Local over Middle Creek	1963	40	Poor
Local over Moon Creek	1952	40	Fair
Local over S Coal Creek	1959	40	Fair
FM over Ballinger Creek	1960	35	Fair
FM over Drainage	1951	35	Poor
FM over Turkey Run	1952	35	Fair
G13 110TH St over N Skunk River	1960	35	Poor
Local over Ballinger Creek	1993	34	Good
Local over Buck Creek	1996	34	Good
Local over Drainage	1950	34	Poor
Local over Moon Creek	1961	34	Fair
Local over Muchakinock Creek	1999	34	Good
FM over Buck Creek	1957	30	Poor
FM over Drainage	1954	30	Poor
FM over Olive Branch Creek	1950	30	Poor
Local over Buck CR	1975	30	Good
Local over Cedar Creek	1985	30	Good
Local over Drainage	1957	30	Poor
Local over Drainage	1951	30	Fair
Local over Middle Creek	1965	30	Fair
Local over Middle Creek	1953	30	Fair
Local over Cedar Creek	1973	26	Poor
Local over Drainage	1949	26	Fair
Local over Middle Creek	1982	26	Fair
Local over Muchakinock Creek	1973	26	Fair
Local over N Skunk River	1975	26	Fair
FM over Middle Creek	1963	25	Fair
FM over Moon Creek	1951	25	Fair
FM over S English River	1952	25	Fair
200TH St over Drainage	2011	20	Good
FM over Cedar Creek	1991	20	Good
FM over Middle Creek	1950	20	Fair
FM over N Coal Creek	1953	20	Poor
Local over Buck Creek	1988	20	Fair
Local over Cedar Creek	1900	20	Fair
Local over Cedar Creek	1951	20	Poor
Local over Drainage	1957	20	Poor
Local over Drainage	1955	20	Fair
Local over Little Bluff Creek	1971	20	Fair
Local over Ballinger Creek	1955	15	Fair
Local over Drainage	1956	15	Poor
Local over Drainage	1954	15	Fair
Local over Drainage	1973	15	Fair
Local over E Br Buckley Creek	1953	15	Fair
Local over Pleasant Creek	1949	15	Poor
Local over Pleasant Creek	1956	15	Poor
Local over Bluff Creek	1973	11	Poor
Local over Drainage Ditch #2	1900	11	Poor
Local over Moon Creek	1952	11	Fair
Local over N Coal Creek	1955	11	Poor
Local over N Coal Creek	1961	11	Fair
140TH St over Cedar Creek	1950	10	Fair
FM over S Coal Creek	1951	10	Fair
Local over Cedar Creek	1900	5	Fair
Local over Cedar Creek	1993	5	Good
Local over Drainage	1956	5	Poor
Local over Drainage	1900	5	Poor
Local over Pleasant Creek	1956	5	Poor
255TH St over Lake Keomah	2006	–	Good

Source: FHWA National Bridge Inventory, 2025.

Mahaska County bridge conditions · Iowa bridges by county.

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