Most Traveled Bridges in Iowa

The busiest bridge in Iowa carries 118,600 vehicles per day. The table below ranks the state's bridges by average daily traffic — these are the structures where condition matters most, because a closure or weight restriction affects the largest number of commuters and freight haulers.

How this ranking works

Average daily traffic is reported by state transportation agencies and can trail real-world growth or detours. BridgeLookup uses it to rank likely disruption impact across comparable records.

Bridge	County	Daily Traffic	Condition	Year Built
I-235 over Drainage Ditch	Polk	118,600	Fair	1966
I-235 & 17th ST over Blue Creek	Polk	113,200	Fair	1968
I29 NB Off Ramp over Perry Creek Conduit	Woodbury	91,000	Good	2017
I 235 over Des Moines Rvr Rbrtraydr	Polk	88,200	Good	1962
I-35 & I-80 over N Walnut Creek	Polk	81,600	Fair	1958
I 35 over Trib To Four Mile Creek	Polk	58,300	Good	2018
EB I-235 over Walnut Creek	Polk	58,050	Fair	1968
WB I-235 over Walnut Creek	Polk	58,050	Fair	1968
I-380 over E And F AVE NW Cedar Rvr	Linn	57,600	Fair	1979
EB I-235 over 17th ST	Polk	56,600	Fair	1967
WB I-235 over 17th ST	Polk	56,600	Fair	1967
NB I-35 EB I-80 over Walnut Creek	Polk	55,950	Fair	1958
EB I-235 over 35th Street	Polk	55,350	Good	2004
WB I-235 over 35th Street	Polk	55,350	Good	2005
EB I-235 over 28th Street	Polk	55,350	Good	2004
WB I-235 over 28th Street	Polk	55,350	Good	2005
WB I-235 over 73rd St& Ia Interstate R	Polk	54,350	Good	1968
I-480 & US 6 over Missouri River & Rr	Pottawattamie	53,700	Fair	1966
EB I-235 over Cummins Parkway	Polk	51,400	Fair	1967
WB I-235 over Cummins Parkway	Polk	51,400	Fair	1967
I 35 NB I 80 EB over US 6	Polk	51,050	Fair	1958
EB I-235 over 73rd St& Ia Interstate R	Polk	50,400	Good	1968
SB I-35 WB I-80 over Walnut Creek	Polk	49,750	Fair	1958
I 35 SB I 80 WB over US 6	Polk	49,750	Fair	1958
NB I-35 EB I-80 over Des Moines Rvr Bike Path	Polk	48,850	Good	1958
NB I-35 EB I-80 over Drainage Ditch	Polk	48,850	Fair	1958
I-35 over Ballard Creek	Story	48,300	Fair	1964
I-35 over Walnut Creek	Story	48,300	Fair	1964
I 35 over South Skunk Rvr Overflow	Story	48,300	Good	2017
I-80 EB & I-35 NB over NW 72nd ST	Polk	48,250	Fair	1958
EB I-235 over 22nd ST	Polk	48,250	Fair	1968
WB I-235 over 22nd ST	Polk	48,250	Fair	1968
SB I-35 WB I-80 over Des Moines River & Path	Polk	48,000	Good	1958
SB I-35 WB I-80 over Drainage Ditch	Polk	48,000	Fair	1958
I 35 over Otter Creek	Polk	47,500	Good	2012
I-80 WB & I-35 SB over NW 72nd ST	Polk	47,050	Fair	1958
I 35 NB over Over Up Rr	Polk	46,900	Good	2002
SB I-35 over Over Upp Rr	Polk	46,900	Fair	2002
EB I-80 over Over NE 29th ST	Polk	45,300	Fair	1959
EB I-80 over Fourmile Creek	Polk	45,300	Fair	1959
NB I-35 EB I-80 over Saylor Creek	Polk	44,550	Fair	1958
NB I-35 EB I-80 over 6th AVE	Polk	44,550	Fair	1958
WB I-80 over NE 29th ST	Polk	44,500	Fair	1959
WB I-80 over Fourmile Creek	Polk	44,500	Fair	1959
SB I-35 WB I-80 over Saylor Creek	Polk	43,750	Fair	1958
SB I-35 WB I-80 over 6th AVE	Polk	43,750	Fair	1958
EB I-235 over Keo Way	Polk	42,800	Good	2006
NB I-35 EB I-80 over Drainage	Polk	42,300	Good	2000
NB I-35 EB I-80 over Up Rr	Polk	42,300	Good	2000
SB I-35 WB I-80 over US 69	Polk	41,550	Good	2000
SB I-35 WB I-80 over Drainage	Polk	41,550	Fair	2000
SB I-35 WB I-80 over Up Rr	Polk	41,550	Good	2000
I 35 NB I 80 EB over US 69	Polk	41,250	Good	2000
SB I-380 over Cc Rr & Ash Pit	Linn	41,000	Fair	1979
NB I 35 EB I 80 over Ia 415	Polk	40,250	Good	1999
NB I-35 EB I-80 over NE 3rd ST	Polk	40,250	Good	2000
NB I-35/EB I-80 over Ia 28	Polk	40,100	Good	1999
I-80 over Stream	Cedar	39,700	Fair	1960
I-80 over Stream	Cedar	39,700	Fair	1960
I-80 over Middle Wapsinonoc Creek	Cedar	39,700	Fair	1960
I 80 WB I 35 SB over Ia 415	Polk	39,550	Good	1999
SB I-35 WB I-80 over NE 3rd ST	Polk	39,550	Good	2000
I-80 over Mud Creek	Polk	39,400	Fair	1959
SB I-35 WB I-80 over Ia 28	Polk	39,100	Fair	1999
NB I-380 over Cc Rr	Linn	38,800	Fair	1980
SB I-380 over Cc Rr	Linn	38,800	Fair	1980
NB I-380 over H AVE NE	Linn	38,800	Fair	1980
SB I-380 over H AVE NE	Linn	38,800	Good	1980
NB I 380 over J AVE NE	Linn	38,800	Fair	1980
SB I-380 over J AVE NE	Linn	38,800	Fair	1980
EB I-235 over NB US 69/e 15th ST	Polk	38,550	Good	2004
WB I-235 over 15th Street	Polk	38,550	Good	2005
I-80 over Mississippi River & Rr	Scott	38,100	Fair	1967
I 74 WB over Mississippi River	Scott	37,650	Good	2020
I 35 SB over Rr Ep True Creek	Polk	37,550	Good	2013
I 235 EB over Hull AVE	Polk	37,300	Good	2005
I 235 WB over Hull Avenue	Polk	37,300	Good	2005
EB I-235 over Union Pacific Rr	Polk	36,950	Good	2004
WB I-235 over Ia 163/univ Ave/ramp	Polk	36,950	Good	2004
WB I-235 over Keo Way	Polk	36,850	Good	2005
I 35 NB over Up Rr Ep True Creek	Polk	36,600	Good	2014
EB I-235 over NE 46 AVE	Polk	36,450	Fair	1967
WB I-235 over NE 46th AVE	Polk	36,450	Fair	1967
I-235 WB over Easton BLVD	Polk	36,300	Good	2006
I 235 EB over Easton BLVD	Polk	36,300	Good	2004
NB I35 EB I80 over Ns Rr & Ia 141	Polk	36,100	Fair	1958
I-80 over Drainage Ditch	Cedar	36,000	Fair	1959
I-80 over Little Elkhorn Creek	Cedar	36,000	Fair	1959
I-80 over Drainage Ditch	Cedar	36,000	Fair	1960
NB I-380 over Coldstream AVE NE	Linn	35,400	Fair	1980
SB I-380 over Coldstream AVE NE	Linn	35,400	Fair	1980
WB US 6 over Goose Creek	Scott	35,400	Good	2011
SB I35 WB I80 over Ns Rr & Ia 141	Polk	35,200	Fair	1958
WB I-235 over Up Rr	Polk	35,150	Good	2004
EB I-235 over E 21st Street	Polk	35,150	Good	2005
WB I-235 over East 21st Street	Polk	35,150	Good	2001
I-80 over Drainage Ditch	Scott	34,600	Fair	1963
I-80 over Stream	Scott	34,600	Fair	1963
US 77 over Missouri River & RD	Woodbury	34,600	Fair	1981
I 380 NB over 15th & 16th Av SW	Linn	34,450	Fair	1975
I 380 SB over 15th & 16th AVE SW	Linn	34,450	Fair	1975
SB I-380 over City Streets Up &ccp Rr	Linn	34,350	Fair	1979
EB I-235 over Guthrie AVE	Polk	33,900	Fair	2006
WB I-235 over Guthrie AVE	Polk	33,900	Good	2006
I-80 over Clear Creek	Iowa	33,800	Good	1963
US 20 over N Branch Catfish Creek	Dubuque	33,600	Fair	1939
US 69 over Bn Rr Scott Ave& Mlk Pkw	Polk	33,600	Fair	1937
I-80 over Drainage Ditch	Jasper	33,400	Fair	1959
I 80 over Stream	Iowa	33,000	Fair	1963
I 80 EB over Iowa River	Johnson	32,900	Good	1960
I 29 Ia 12 over Drainage-all Of Roadway	Woodbury	32,900	Fair	1957
NB I-380 over 42nd ST	Linn	32,850	Fair	1981
US 69 over Yeader Creek	Polk	32,600	Good	1984
US 218 over Deer Creek	Johnson	32,400	Good	1970
NB I-380 over Cc Rr & Ash Pit	Linn	32,300	Fair	1979
I-80 over Panther Creek	Dallas	32,100	Good	1965
I 80 WB over Iowa River	Johnson	32,050	Good	1960
NB I-380 over City Sts Ccp& Up Rr	Linn	31,850	Fair	1979
I-80 over Drainage Ditch	Scott	31,600	Fair	1963
I-80 EB over Missouri River RD & Rr	Pottawattamie	31,550	Fair	1972
I-80 over No Name Creek	Iowa	31,400	Fair	1963
NB I-380 over Cic Rr & City ST	Linn	31,400	Fair	1975
SB I-380 over Cic Rr & City ST	Linn	31,400	Fair	1975
NB I-380 over Over Up Rr	Linn	31,400	Fair	1974
SB I-380 over Over Up Rr	Linn	31,400	Good	1974
I-80 over Crow Creek	Scott	31,400	Fair	1963
US 69 over Des Moines River	Polk	31,100	Fair	1936
I 80 & US 6 over Little Mosquito Creek	Pottawattamie	31,100	Fair	1966
EB I-80 over Over US 6 & Iais Rr	Johnson	31,000	Fair	1995
I 80 WB over Over US 6 & Iais Rr	Johnson	31,000	Fair	1992
EB I-80 over Cic Railway	Johnson	30,600	Fair	1963
WB I-80 over Cic Railway	Johnson	30,600	Fair	1963
I-80 over Elk Creek	Jasper	30,500	Fair	1961
I-80 over Drainage Ditch	Jasper	30,500	Fair	1961
I-80 over Stream	Iowa	30,300	Fair	1962
NB I-380 over Cic Rr & 8th AVE	Linn	30,200	Fair	1973
I-80 over Old Mans Creek	Iowa	30,100	Fair	1962
EB I-235 over University AVE	Polk	29,900	Good	2005
I-80 over Stream	Iowa	29,700	Good	1961
SB I-35 over Raccoon River	Polk	29,550	Fair	2003
I-80 over Bear Creek	Dallas	29,500	Good	1965
US 61 over Crow Creek	Scott	29,300	Good	1981
I 35 NB over Four Mile Creek	Polk	29,150	Good	2018
US 218 over Quarry Lake & Wyth RD	Black Hawk	29,000	Fair	1989
W University over I-35 & I-80	Polk	28,914	Good	1984
I 380 SB over Ia 922	Linn	28,800	Fair	1979
NB I-35 over Raccoon River	Polk	28,800	Good	2002
NB I 380 over 33rd AVE	Linn	28,600	Fair	1974
SB I-380 over 33rd AVE	Linn	28,600	Fair	1974
US 30 151 & 218 over Creek	Linn	28,500	Fair	1975
I-80 over N.fk. English River	Poweshiek	28,500	Fair	1963
I-80 over No Fork English River	Poweshiek	28,500	Fair	1963
I-74 (wb) over Duck Creek And Bike Path	Scott	28,450	Fair	1971
I-74 (eb) over Duck Creek And Bike Path	Scott	28,450	Fair	1971
I 35 SB over Four Mile Creek	Polk	28,400	Good	2020
I-35 over Drainage Ditch	Story	28,300	Good	1967
I 74 EB over Mississippi River	Scott	28,250	Good	2021
I 74 & US 6 WB over US 67 Dme Rr City Sts	Scott	28,250	Good	2019
I 74 EB US 6 EB over US 67 Rr City Streets	Scott	28,250	Good	2021
SB I-380 over 42nd ST	Linn	28,050	Fair	1981
US 6 over Cow Creek	Scott	28,000	Fair	1936
I 380 NB over W-60 & Cric Rr	Johnson	27,900	Fair	1971
I 380 SB over W-60 & Cic Rr	Johnson	27,900	Fair	1972
I-80 over Drainage Ditch	Adair	27,600	Fair	1959
I-80 over Drainage Ditch	Adair	27,600	Fair	1959
US 6 over Iowa River	Johnson	27,600	Fair	1957
US 6 over Ralston Creek	Johnson	27,600	Fair	1957
I-80 over Drainage Ditch	Madison	27,600	Fair	1959
EB I-80 over Over Up Rr	Dallas	27,550	Fair	1966
I 35 over Drainage Ditch	Hamilton	27,200	Fair	1966
US 6 over Clear Creek	Johnson	27,200	Good	1998
NB I-380 over Iowa River	Johnson	27,200	Fair	1972
SB I-380 over Iowa River	Johnson	27,200	Fair	1972
E University over Small Creek	Polk	27,200	Good	2003
Ia 415 over Drainage Ditch	Polk	27,000	Good	1983
I 35 over Stream	Hamilton	26,900	Good	1965
US 77 over I 29 & Ia 12 NB	Woodbury	26,900	Good	2012
WB I-80 over Over Up Rr	Dallas	26,850	Fair	1966
I 380 NB over Iais Rr	Johnson	26,550	Good	2021
I 380 SB over Iais Rr	Johnson	26,550	Good	2022
I 380 NB over US 6	Johnson	26,550	Good	2021
I 380 SB over US 6	Johnson	26,550	Good	2022
US 67 over Miss Rvr Rr & Ia 461	Scott	26,500	Poor	1940
I-80 WB over Imrl Rr	Scott	26,250	Fair	1963
I 35 NB over E 1st Street	Polk	26,200	Good	2019
I 380 NB over Ia 922	Linn	26,000	Fair	1979
I 380 SB over Cic Rr & 8th AVE	Linn	26,000	Fair	1975
NB I-380 over 5th AVE SW	Linn	26,000	Fair	1975
SB I-380 over 5th AVE SW	Linn	26,000	Fair	1975
I-80 over North River	Adair	25,900	Fair	1958
I-80 over Plunger Creek	Adair	25,900	Fair	1959
Ia 28 over Walnut Creek	Polk	25,900	Good	1969
EB I-80 over Ia 965/coral Ridge AVE	Johnson	25,850	Fair	1963
I 35 SB over E 1st Street	Polk	25,550	Good	2020
EB I-235 over Up Rr	Polk	25,550	Good	2006
WB I-235 over Up Rr	Polk	25,550	Good	2006
I 35 SB over Iais Rr	Polk	25,300	Good	2013
I 35 SB over Grand AVE	Polk	25,300	Fair	2013
I 80 WB over Missouri Rvr RD Rr	Pottawattamie	25,250	Good	2010
I 80 WB over Ia 965/coral Ridge AVE	Johnson	25,150	Fair	1963