US Bridges

Girder and Floorbeam System bridges in Iowa

Main girders along the bridge with transverse floorbeams carrying the deck, typical of larger steel bridges. Iowa has 140 of them, 0.6% of its bridges. Nationally this type accounts for 0.8% of all bridges.Compare states for this type.

Girder and Floorbeam System bridges
140
Poor condition
34%
47 bridges
Average age
61.5 yrs
Combined length
11 mi

Busiest girder and floorbeam system bridges in Iowa

Top 140 by daily traffic
BridgeCountyLocationBuiltTypeLengthDaily trafficCondition
EB I-235 over Walnut Creek
No. 000000000042270
Polk County3.4 Mi. E of W Jct. 35/801968Girder and Floorbeam System336 ft58,050Fair
WB I-235 over Walnut Creek
No. 000000000042280
Polk County3.4 MI E of W JCT 35/801968Girder and Floorbeam System336 ft58,050Fair
I-480 & US 6 over Missouri River & RR
No. 000000000045670
Pottawattamie CountyOver Missouri River1966Girder and Floorbeam System1,687 ft53,700Fair
I-80 EB over Missouri River RD & RR
No. 000000000045082
Pottawattamie CountyNebr. State Line1972Girder and Floorbeam System2,468 ft31,550Fair
I 80 WB over Missouri Rvr RD RR
No. 000000000609905
Pottawattamie CountyNebraska State Line2010Girder and Floorbeam System2,483 ft25,250Good
WB US 30 over South Skunk River
No. 000000000048740
Story County1.2 Mi. W of Jct. I-351963Girder and Floorbeam System325 ft16,300Fair
I 129 over Missouri River & I-29
No. 000000000600765
Woodbury County0.5 Mi.W.Of JCT.291976Girder and Floorbeam System2,607 ft15,800Fair
EB US 30 over South Skunk River
No. 000000000048730
Story County1.2 Mi. W of Jct. I-351963Girder and Floorbeam System325 ft15,600Fair
WB US 20 over Mid Br Catfish Ck Cc RR
No. 000000000023850
Dubuque County0.6 Mi. E of NW Arterial1961Girder and Floorbeam System385 ft14,300Fair
SW 9th ST over Cherry RR Mlk Pkwy
No. 000000000003961
Polk County0782409001967Girder and Floorbeam System1,334 ft14,108Poor
Ia 163 EB over E 4 Mile Creek & Iai RR
No. 000000000040950
Polk County1.2 Miles W of JCT US 651965Girder and Floorbeam System596 ft10,750Fair
Ia 163 WB over E 4 MI Iai RR & N Pl Hl
No. 000000000040960
Polk County1.2 Miles W of JCT US 651965Girder and Floorbeam System596 ft10,750Fair
Ia 461 over Dme RR
No. 000000000046880
Scott County1.0 Mi. E of JCT Ia 221958Girder and Floorbeam System464 ft9,800Fair
US 151 SB over Wapsipinicon River
No. 000000000032220
Jones County1.4 Mi. S of Jct. 641964Girder and Floorbeam System431 ft7,350Fair
NB I-29 over Soldier River
No. 000000000028320
Harrison County2.8 Mi. N of Jct. Ia 1271967Girder and Floorbeam System306 ft7,300Fair
SB I-29 over Soldier River
No. 000000000028330
Harrison County2.8 Mi. N of Jct. Ia 1271967Girder and Floorbeam System306 ft7,300Fair
5th ST over Cedar River
No. 000000000011832
Black Hawk CountyCity Bridge No. 81967Girder and Floorbeam System630 ft7,280Fair
NB I-29 over Little Sioux River
No. 000000000028360
Harrison County0.4 Mi. N of Jct. SR F-201967Girder and Floorbeam System588 ft7,250Fair
SB I-29 over Little Sioux River
No. 000000000028370
Harrison County0.4 Mi. N of Jct. SR F-201967Girder and Floorbeam System588 ft7,250Fair
NB I-29 over Drainage Ditch
No. 000000000028380
Harrison County1.6 Mi. N of Jct. SR F-201966Girder and Floorbeam System316 ft7,250Fair
SB I-29 over Drainage Ditch
No. 000000000028390
Harrison County1.6 Mi. N of Jct. SR F-201966Girder and Floorbeam System316 ft7,250Fair
SW 8th ST over RR Cherry Mlk Jr Pkwy
No. 000000000003974
Polk County0782409001967Girder and Floorbeam System1,515 ft6,875Poor
Old Ia 375 over Mosquito Creek & RR
No. 000000000002686
Pottawattamie County0000000001996Girder and Floorbeam System571 ft6,622Fair
North 3rd ST over Soldier Creek & Trail
No. 000000000005100
Webster County0892819041961Girder and Floorbeam System918 ft5,768Poor
Nb/Wb Ia 5 over Middle River
No. 000000000051020
Warren County1.7 Mi. N of Jct. Ia 231966Girder and Floorbeam System356 ft5,650Fair
6th St. over Cedar River
No. 000000000503855
Black Hawk CountyCity Bridge No. 431984Girder and Floorbeam System703 ft5,195Fair
US 61 NB over S Fork Maquoketa River
No. 000000000030150
Jackson County0.5 Mi. N of Jct. Ia 641967Girder and Floorbeam System374 ft5,100Fair
US 30 EB over East Indian Creek
No. 000000000048830
Story County3.4 Mi. W of Jct. 651963Girder and Floorbeam System306 ft4,700Fair
US 30 over Missouri River
No. 000000000027321
Harrison CountyAt Nebraska State Line1991Girder and Floorbeam System1,983 ft4,410Fair
US 30 EB over Des Moines River
No. 000000000015200
Boone County1.3 Miles E of JCT SR R181963Girder and Floorbeam System659 ft4,400Fair
NB US 59 over Over Cc RR
No. 000000000021470
Crawford County0.4 Mi. S of Ia 391967Girder and Floorbeam System375 ft4,400Fair
US 30 WB over Des Moines River
No. 000000000015210
Boone County1.3 Miles E of JCT SR R181963Girder and Floorbeam System724 ft4,350Fair
SB US 59 over Over Cc RR
No. 000000000021480
Crawford County0.4 Mi. S of Ia 391967Girder and Floorbeam System374 ft4,300Fair
Ia 5 NB over Coal Creek
No. 000000000050980
Warren County0.7 Mi. N of Ia 3161966Girder and Floorbeam System246 ft4,300Fair
Ia 5 NB over South River
No. 000000000050990
Warren County0.2 Mi. N of Jct. SR S311966Girder and Floorbeam System391 ft4,300Fair
SB Ia 5 & EB 92 over White Breast Creek
No. 000000000035160
Marion County2.6 Mi. N of Jct. Iowa 141965Girder and Floorbeam System432 ft4,200Fair
Sharp Street over Keg Creek
No. 000000000035810
Mills County0000000001960Girder and Floorbeam System416 ft3,979Fair
Ia 906 EB over Mosquito Creek
No. 000000000043160
Pottawattamie County1.0 Mi. W of Jct. I-801968Girder and Floorbeam System366 ft3,900Fair
Ia 906 WB over Mosquito Creek
No. 000000000043170
Pottawattamie County1.0 Mi. W of Jct. I-801968Girder and Floorbeam System366 ft3,900Fair
Ia 14 over Des Moines River & Res
No. 000000000035200
Marion County1.2 Mi. N of SR G401965Girder and Floorbeam System5,653 ft3,820Fair
Ia 14 over Brush Creek
No. 000000000035210
Marion County0.2 Mi. S of S.R. G281965Girder and Floorbeam System326 ft3,820Fair
Adams Pkwy over Cedar River
No. 000000000012240
Bremer County0000000001968Girder and Floorbeam System508 ft3,666Fair
Local over UP RR & Lynn Ck
No. 000000000035660
Marshall County0831806031971Girder and Floorbeam System710 ft3,584Poor
Ia 14 over Black Hawk Creek
No. 000000000025841
Grundy County1.5 Mi. S of S JCT SR D351931Girder and Floorbeam System179 ft3,230Poor
Ramp Ia 12 over Rp Ia 12 to Ia 376 & Bns
No. 000000000053010
Woodbury CountyAt EB Ia 12 and SB US 3761967Girder and Floorbeam System306 ft3,220Fair
Ia 14 over White Breast Creek
No. 000000000035180
Marion County2.1 Mi. S of Jct. SR G401965Girder and Floorbeam System688 ft3,120Fair
Ia 14 over Teter Creek
No. 000000000035190
Marion County0.2 Mi. S of Jct. SR G401965Girder and Floorbeam System390 ft3,120Fair
US 34 Ramp over BNSF RR & City Streets
No. 000000000602935
Des Moines County1.4 Mi. E of Jct. US 611972Girder and Floorbeam System681 ft3,050Fair
235th Street over Big Creek
No. 000000000028440
Henry County0710712271957Girder and Floorbeam System418 ft2,930Poor
US 63 SB over Crane Creek
No. 000000000015470
Bremer County1.5 Mi. S of Jct. 1881957Girder and Floorbeam System73 ft2,900Fair
I 880 WB over Mosquito Creek
No. 000000000044530
Pottawattamie County0.5 Mi. E of Jct. Ia 1911966Girder and Floorbeam System286 ft2,900Fair
Fleur DR over Raccoon and RR
No. 000000000003910
Polk County0782408001936Girder and Floorbeam System947 ft2,825Poor
North Main ST over Maquoketa River
No. 000000000032270
Jones County0860322091969Girder and Floorbeam System353 ft2,787Fair
E-S Ramp B over High & Main ST
No. 000000000604860
Des Moines County0.4 Mi. W of Il St. Line1972Girder and Floorbeam System397 ft2,750Fair
N Centerpoint over East Blue Creek
No. 000000000033880
Linn County0860833101930Girder and Floorbeam System92 ft2,583Poor
HWY 941 over Iowa River
No. 000000000026980
Hardin County0892117131932Girder and Floorbeam System146 ft2,357Fair
HWY 927 over Elkhorn Creek
No. 000000000037910
Muscatine County0780104031929Girder and Floorbeam System62 ft2,340Poor
Ia 1 & Ia 16 over Little Lick Creek
No. 000000000050200
Van Buren County1.2 Mi. N of S Jct. Ia 161967Girder and Floorbeam System244 ft2,320Fair
CO RD Y-68 over Wapsipinicon River
No. 000000000047010
Scott County080E406041965Girder and Floorbeam System366 ft2,310Fair
US 34 over Middle Nodaway River
No. 000000000037580
Montgomery County3.0 Mi. E Jct. US 711964Girder and Floorbeam System306 ft2,240Fair
Ramp to WB US 34 over Parking Lot
No. 000000000604865
Des Moines County0.4 Mi. W of Il St. Line1972Girder and Floorbeam System408 ft1,940Fair
W 4th ST over Cedar River
No. 000000000501690
Black Hawk CountyCity Bridge No. 341975Girder and Floorbeam System577 ft1,908Fair
FM over Cedar River
No. 000000000103070
Cedar County0800318031966Girder and Floorbeam System827 ft1,860Poor
6th ST over West Indian Creek
No. 000000000049000
Story County0000000001964Girder and Floorbeam System246 ft1,850Fair
Ia 51 over Branch Yellow River
No. 000000000013590
Allamakee County5.9 Mi. S of Jct. Ia 91967Girder and Floorbeam System274 ft1,440Fair
Ia 51 over N Fork Yellow River
No. 000000000013600
Allamakee County3.5 Mi. S of Jct. Ia 91967Girder and Floorbeam System284 ft1,440Fair
NW Madrid DR over Big Creek Tributary
No. 000000000283308
Polk County0812535041970Girder and Floorbeam System445 ft1,340Fair
CO RD G8L over Mosquito Creek
No. 000000000044181
Pottawattamie County0774118081994Girder and Floorbeam System407 ft1,335Fair
FM over Lost Creek
No. 000000000033330
Lee County0680404041953Girder and Floorbeam System155 ft1,310Poor
S-E Ramp D over City Sts
No. 000000000604856
Des Moines County0.1 Mi. W of Il Border1993Girder and Floorbeam System182 ft1,110Fair
W40 over Des Moines River
No. 000000000050350
Van Buren County0680817041960Girder and Floorbeam System937 ft970Poor
FM over Cedar River
No. 000000000104291
Cedar County0810428031971Girder and Floorbeam System699 ft950Poor
FM over Iowa River
No. 000000000316610
Tama County0821320021968Girder and Floorbeam System505 ft786Poor
US 34 WB Off Ramp over Parking Lot
No. 000000000604851
Des Moines County0.2 Mi. W of Il St. Line1972Girder and Floorbeam System502 ft770Fair
FM over Des Moines River
No. 000000000077405
Boone County0832629051972Girder and Floorbeam System723 ft769Poor
Old Ia 105 over Turtle Creek
No. 000000000036590
Mitchell County0991823061930Girder and Floorbeam System63 ft746Fair
Ia 175 over Des Moines River
No. 000000000052410
Webster County1.8 Mi. E of JCT P701948Girder and Floorbeam System699 ft730Fair
FM over Little Sioux River
No. 000000000353331
Woodbury County0884333051992Girder and Floorbeam System351 ft679Fair
F44 290th ST over Cedar River
No. 000000000018490
Cedar County0790311151948Girder and Floorbeam System1,145 ft620Poor
FM over Dm River
No. 000000000235631
Mahaska County0741605042010Girder and Floorbeam System1,139 ft620Good
FM over Boone River
No. 000000000172410
Hamilton County0892531011964Girder and Floorbeam System308 ft499Fair
C44 230th ST over Floyd River
No. 000000000273271
Plymouth County91461103102019Girder and Floorbeam System314 ft439Good
Killdeer over Winnebago River
No. 000000000106821
Cerro Gordo County0972114041984Girder and Floorbeam System225 ft432Fair
FM over Maquoketa River
No. 000000000192480
Jackson County084E413061964Girder and Floorbeam System570 ft430Fair
FM over Boone River
No. 000000000171531
Hamilton County0872614061973Girder and Floorbeam System390 ft429Fair
FM over Maple River
No. 000000000350251
Woodbury County0864227081985Girder and Floorbeam System324 ft429Fair
Local Road over Brush Creek
No. 000000000023460
Des Moines County0690335051927Girder and Floorbeam System80 ft393Poor
FM 580th St. over Little Sioux River
No. 000000000108171
Cherokee County0914028011981Girder and Floorbeam System415 ft350Fair
FM over Middle River
No. 000000000233740
Madison County0762629081958Girder and Floorbeam System252 ft300Poor
Local over Stream
No. 000000000325601
Union County0722910081985Girder and Floorbeam System82 ft180Poor
Local over Linn CR
No. 000000000243940
Marshall County0842036021916Girder and Floorbeam System42 ft157Poor
Local over Lamalees Creek
No. 000000000218070
Lee County0660535061957Girder and Floorbeam System25 ft150Poor
Matsell Pk RD over Wapsipinicon River
No. 000000000222050
Linn County0850536061939Girder and Floorbeam System303 ft147Poor
FM W-16 over I-80
No. 000000000029900
Iowa County2.1 Mi. E of Jct. Ia 1491963Girder and Floorbeam System219 ft140Fair
305th ST over Allen Creek
No. 000000000177711
Harrison County0784417011974Girder and Floorbeam System66 ft139Fair
FM over Little Sioux River
No. 000000000351631
Woodbury County0874319031992Girder and Floorbeam System351 ft110Good
235th Street over Wapsipinicon River
No. 000000000121690
Clinton County081E111051930Girder and Floorbeam System420 ft100Poor
235th Street over Branch of Wapsipinicon
No. 000000000121700
Clinton County081E112031930Girder and Floorbeam System252 ft100Poor
FM over Little Cedar River
No. 000000000155880
Floyd County0971531021959Girder and Floorbeam System99 ft79Fair
Local over Branch Des Moines River
No. 000000000332460
Wapello County0731521031930Girder and Floorbeam System46 ft62Poor
P39 Victor Ave over Small Stream
No. 000000000054621
Adair County0743015022002Girder and Floorbeam System30 ft60Good
FM-480th St. over Little Sioux River
No. 000000000108870
Cherokee County0924001011965Girder and Floorbeam System346 ft60Poor
FM RD F16 over W Fork/W Nishnabotna
No. 000000000307301
Shelby County0813805011970Girder and Floorbeam System278 ft60Fair
Local over Stream
No. 000000000351625
Woodbury County08743071920Girder and Floorbeam System29 ft60Poor
T Ave over Small Stream
No. 000000000190261
Iowa County0800929012012Girder and Floorbeam System90 ft50Good
Local over Crooked Creek
No. 000000000279250
Pocahontas County0923109011917Girder and Floorbeam System27 ft50Poor
FM over Four Mile Creek
No. 000000000326360
Union County0732825011952Girder and Floorbeam System44 ft50Fair
Local Road over West Fork Crooked Creek
No. 000000000336521
Washington County0750811012008Girder and Floorbeam System92 ft50Fair
West ST over Drainage
No. 000000000010730
Woodbury CountyM706020001930Girder and Floorbeam System120 ft48Poor
Local over Little Sioux River
No. 000000000350531
Woodbury County08643181994Girder and Floorbeam System351 ft45Good
FM over Troublesome Creek
No. 000000000168620
Guthrie County0793322021948Girder and Floorbeam System25 ft40Poor
1870 Crane Ave over Boone River
No. 000000000173670
Hancock County0952621061925Girder and Floorbeam System41 ft36Poor
Local over Three Mile Creek
No. 000000000326741
Union County0733010041978Girder and Floorbeam System64 ft35Poor
Local over Big Cedar River
No. 000000000200221
Jefferson County0710928101991Girder and Floorbeam System122 ft34Poor
Cottonwood RD over Jordan Creek
No. 000000000283662
Pottawattamie County0743903012023Girder and Floorbeam System102 ft34Good
Truman Ave over Walnut Creek
No. 000000000289421
Pottawattamie County0773814032023Girder and Floorbeam System102 ft34Good
FM over Grand River
No. 000000000138180
Decatur County0692620071967Girder and Floorbeam System310 ft29Fair
175 TH over Raccoon River
No. 000000000162810
Greene County0843208031942Girder and Floorbeam System300 ft29Fair
Local over Small Stream
No. 000000000325330
Union County0722808061940Girder and Floorbeam System39 ft26Poor
195th ST over Malone Creek
No. 000000000082941
Buchanan County0890924052023Girder and Floorbeam System68 ft21Good
410 140th ST over Boone River
No. 000000000172940
Hancock County0942615011927Girder and Floorbeam System51 ft21Poor
Loc B Level RD over Stream
No. 000000000326940
Union County0733114011940Girder and Floorbeam System39 ft21Poor
Local over Long Dick CR
No. 000000000170750
Hamilton County0862334011916Girder and Floorbeam System40 ft20Poor
FM 330 190th ST over Boone River
No. 000000000173660
Hancock County0952621031925Girder and Floorbeam System37 ft20Poor
FM & Nash Trail over Allen Creek
No. 000000000179645
Harrison County0814326041976Girder and Floorbeam System67 ft20Poor
FM over Short Creek
No. 000000000138951
Decatur County0702632061929Girder and Floorbeam System73 ft15Poor
FM 130th ST over Allen Creek
No. 000000000179621
Harrison County0814323031950Girder and Floorbeam System66 ft15Fair
Local over West Platte River
No. 000000000326130
Union County0723121021900Girder and Floorbeam System53 ft15Poor
265th Ave over Stream
No. 000000000065291
Appanoose County0691726042022Girder and Floorbeam System89 ft11Fair
Cedar\jones RD over Small
No. 000000000104731
Cedar County0820301011980Girder and Floorbeam System62 ft11Poor
255th Ave over Creek
No. 000000000122262
Clinton CountyOn 255th Ave.2023Girder and Floorbeam System21 ft11Good
230 Street over Minor Drainage
No. 000000000159620
Fremont County0684317031940Girder and Floorbeam System60 ft11Fair
Local over Small Stream
No. 000000000324980
Union County0713035011940Girder and Floorbeam System33 ft11Fair
Local over Small Stream
No. 000000000326220
Union County0723135011964Girder and Floorbeam System84 ft11Poor
Local Road over Camp Creek
No. 000000000337580
Washington County0770720042007Girder and Floorbeam System70 ft11Fair
355th over Stream
No. 000000000355840
Worth County0982129031900Girder and Floorbeam System40 ft11Poor
Field Entrance over Side Ditch
No. 000000000358991
Wright County0932530011985Girder and Floorbeam System60 ft10Fair
Local over Branch Wolf Creek
No. 000000000163750
Grundy County0861813031914Girder and Floorbeam System38 ft5Poor
Local over Small Stream
No. 000000000326470
Union County0732901051900Girder and Floorbeam System24 ft5Poor
FM Legno over Devils Run
No. 000000000189910
Iowa County0791224011900Girder and Floorbeam System32 ft—Poor

Counties with the most

Pottawattamie County10
Harrison County10
Union County9
Polk County8
Woodbury County8
Des Moines County6
Marion County5
Story County4
Cedar County4
Warren County3
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