Boone County, Illinois bridges

Boone County has 109 bridges and culverts in the National Bridge Inventory, the oldest built in 1900. 11 (10%) are rated poor. The most common type is culvert (37%).

Bridges: 109
Good: 41%
Fair: 49%
Poor: 10%; 11 bridges
Average age: 38.9 yrs
Posted or closed: 3

Map of bridges in Boone County

Green good, amber fair, red poor. Click a marker for details.

Search bridges in Boone County

Type at least two characters, or pick a condition or type, to search every bridge in the county.

Condition

Good41%(45)

Fair49%(53)

Poor10%(11)

When they were built

Bridges built per decade. Year built as recorded in the inventory; reconstruction years are not included.

Busiest

I 90 over Stream
51,100 vehicles/day
Fair
I-90 over Stream
28,000 vehicles/day
Good
I 90 WB over Mosquito Crk
28,000 vehicles/day
Fair
I 90 EB over Mosquito Ckr
28,000 vehicles/day
Good
I-90 over Stream
25,700 vehicles/day
Fair

Longest

Newburg RD over Kishwaukee River
376 ft
Fair
US Br 20 over Kishwaukee River
363 ft
Fair
US 20 EB over I-90
324 ft
Fair
US 20 WB over I-90
320 ft
Fair
US 20 EB over S Appleton RD
291 ft
Fair

Oldest

Irene RD over Unnamed Crk
Built 1900
Good
Stone Quarry RD over Hackey Creek
Built 1945
Poor
US 20 Br over Beaver Creek
Built 1957
Fair
Woodstock RD over Piscasaw Creek
Built 1957
Fair
N Boone School RD over Beaver Creek
Built 1957
Fair

All bridges in Boone County

Busiest first · showing 1–109 of 109

Bridges in Boone County
Bridge	Location	Built	Type	Length	Daily traffic	Condition
I 90 over Stream No. 004996200000000	0.6 MI E Stone Quary	2014	Culvert	27 ft	51,100	Fair
I-90 over Stream No. 004995000000000	0.7 MI W Mchenry CO	1958	Culvert	28 ft	28,000	Good
I 90 WB over Mosquito Crk No. 004995800000000	3 MI SE of Belvidere	2013	Stringer/Multi-beam or Girder	111 ft	28,000	Fair
I 90 EB over Mosquito Ckr No. 004995900000000	3 MI SE of Belvidere	2013	Stringer/Multi-beam or Girder	111 ft	28,000	Good
I-90 over Stream No. 004995100000000	1.9 MI E Winn CO LN	1958	Culvert	27 ft	25,700	Fair
I-90 over Stream No. 004995200000000	3.8 MI E Winn CO LN	1958	Culvert	27 ft	25,550	Good
US 20 EB over I-90 No. 004000400000000	.11 MI E Wheeler RD	1964	Stringer/Multi-beam or Girder	324 ft	14,200	Fair
US 20 WB over I-90 No. 004990000000000	.13 MI E Wheeler RD	1958	Stringer/Multi-beam or Girder	320 ft	14,200	Fair
US 20 WB over S Appleton RD No. 004000600000000	SW Edge Belvidere	1966	Stringer/Multi-beam or Girder	282 ft	13,700	Fair
US 20 Br over Beaver Creek No. 004000100000000	2.5 MI W Belvidere	1957	Stringer/Multi-beam or Girder	237 ft	13,400	Fair
US 20 Br over Trib. of Beaver Cr. No. 004200300000000	.1 MI E. Winn. CO LN	1989	Culvert	31 ft	13,400	Fair
US 20 EB over S Appleton RD No. 004000500000000	SW Edge Belvidere	1966	Stringer/Multi-beam or Girder	291 ft	13,100	Fair
S. Appleton Road over Kishwaukee River No. 004700300000000	N of Locust ST	1964	Stringer/Multi-beam or Girder	119 ft	11,700	Poor
S. Appleton Road over Kishwaukee River No. 004700400000000	S of Lincoln Ave	1964	Stringer/Multi-beam or Girder	74 ft	11,700	Fair
US Br 20 over Kishwaukee River No. 004001300000000	E Edge of Belvidere	1986	Stringer/Multi-beam or Girder	363 ft	11,100	Fair
Il 76 over Drainage Ditch No. 004200700000000	0.8 Mi. N.Of Bus 20	1994	Culvert	28 ft	10,300	Fair
State Street over Kishwaukee River No. 004001900000000	Downtown Belvidere	2001	Stringer/Multi-beam or Girder	221 ft	8,800	Good
US 20 over Coon Creek No. 004001700000000	2 Mi. E. Belvidere	1996	Stringer/Multi-beam or Girder	209 ft	8,550	Fair
Il 76 over Beaver Creek No. 004001600000000	2.5 Mi. S. Il 173	1990	Stringer/Multi-beam or Girder	155 ft	8,250	Fair
Newburg RD over Kishwaukee River No. 004301300000000	3.5 MI W of Belvider	1962	Stringer/Multi-beam or Girder	376 ft	8,050	Fair
Il 173 over Willow Creek No. 004200600000000	0.3 MI E Winn. CO LN	1994	Culvert	26 ft	6,250	Good
Il 173 over Piscasaw Creektrib. No. 004001800000000	At Mchenry Co. Ln.	2001	Slab	90 ft	5,000	Good
Town Hall Road over Unnamed Stream No. 004700500000000	0.25MI S of US 20	2010	Culvert	100 ft	4,950	Good
Il RTE 173 over Creek No. 004103000000000	.23MI E of Il 76	2015	Culvert	22 ft	4,850	Good
Il 173 over Beaver Creek No. 004002000000000	2.0 MI E Poplar Grov	2008	Stringer/Multi-beam or Girder	130 ft	4,550	Fair
Ill Route 173 over Beaver CR Tributary No. 004200200000000	1.5 MI W Capron	1974	Culvert	32 ft	4,550	Fair
Il 173 over Beaver Creek No. 004200400000000	0.5 Mi. Sw. Capron	1994	Culvert	26 ft	4,550	Fair
Spring Creek RD over Beaver Creek No. 004308400000000	4 MI NW of Belvidere	1993	Box Beam or Girders - Multiple	129 ft	4,300	Fair
Main ST over Kishwaukee River No. 004700200000000	S of Lincoln Ave	1972	Stringer/Multi-beam or Girder	233 ft	4,150	Fair
Il 173 over Br. Beaver Creek No. 004200500000000	2.7 Mi. E. of Il 76	2000	Culvert	26 ft	4,100	Good
Beloit RD over Beaver Creek No. 004306900000000	3.5 MI NW Belvidere	1978	Girder and Floorbeam System	145 ft	3,800	Good
Poplar Grove RD over US 20 Br No. 004001500000000	NE of Belvidere	1986	Stringer/Multi-beam or Girder	242 ft	3,600	Fair
Caledonia RD over Beaver Creek No. 004308500000000	2.5 M N. of Belvider	2003	Stringer/Multi-beam or Girder	157 ft	3,350	Good
Irene RD over Unnamed Crk No. 004501200000000	0.25 MI S of US 20	1900	Culvert	39 ft	3,200	Good
Garden Prairie over Kishwaukee River No. 004309700000000	.5 MI N US 20	2015	Stringer/Multi-beam or Girder	204 ft	2,850	Fair
Poplar Grove Creek over Beaver Creek No. 004310300000000	1.0 MI S Poplar Gr	2023	Stringer/Multi-beam or Girder	133 ft	2,550	Good
Riverside Road over Beaver Creek No. 004308000000000	4.0 MI NW Belvidere	1988	Box Beam or Girders - Multiple	108 ft	2,350	Fair
Riverside Road over Br of Beaver CR No. 004309200000000	3.5MI NE of Belvider	2007	Frame	28 ft	2,350	Good
Marengo RD over Piscasaw Creek No. 004304100000000	1.5 MI NE Belvidere	1965	Slab	136 ft	2,200	Fair
Poplar Grove RD over Kishwaukee River No. 004309800000000	NE Edge of Belvidere	2020	Stringer/Multi-beam or Girder	289 ft	2,200	Good
Hunter Road (fas 3 over Br of S Kinnikinnick No. 004500700000000	0.2 MI E of CO Line	1975	Culvert	23 ft	2,150	Fair
Lawrenceville Road over Piscasaw Creek No. 004306500000000	0.5 MI E Belvidere L	1974	Box Beam or Girders - Multiple	145 ft	2,050	Poor
Marengo RD (tr 77) over Mud Creek No. 004308600000000	1.5 MI N Gardn Prari	1994	Stringer/Multi-beam or Girder	52 ft	2,000	Fair
Woodstock RD over Piscasaw Creek No. 004300100000000	.6 MI E Poplar Gr RD	1957	Slab	140 ft	1,800	Fair
Dawson Lake RD over Branch of Beaver CR No. 004303600000000	5.0 MI N Belvidere	1958	Culvert	23 ft	1,750	Fair
Squaw Prairie RD over Beaver Creek No. 004303900000000	2.5 MI NW Belvidere	1959	Slab	125 ft	1,650	Fair
Irene RD over Unnamed Creek No. 004309100000000	1.5MI S of US 20	2007	Box Beam or Girders - Multiple	30 ft	1,650	Good
Orth Road over Br of Beaver Creek No. 004501300000000	0.6 Mi. W. of Il 76	2009	Culvert	28 ft	1,650	Fair
Orth RD over Beaver Creek No. 004600000000000	4.0 MI N Belvidere	2014	Slab	101 ft	1,650	Fair
Irene RD over I 90 No. 004995400000000	.5 MI S US 20	2013	Stringer/Multi-beam or Girder	236 ft	1,650	Good
Stone Quarry RD over Hackey Creek No. 004300800000000	0.5 S Belvidere	1945	Slab	22 ft	1,550	Poor
FAS-39 (hunter Rd) over Beaver Creek No. 004309300000000	3.0 MI NW of Capron	2011	Slab	96 ft	1,550	Good
Stone Quarry RD over I 90 No. 004995600000000	.5 MI S US 20	2013	Stringer/Multi-beam or Girder	231 ft	1,550	Fair
Wheeler RD over Branch of Kishwaukee No. 004302500000000	1.5 MI SE Cherry Val	1959	Culvert	26 ft	1,450	Good
Lawrenceville RD over Mud Creek No. 004308800000000	1.5MI. NW Garden Pr.	2000	Stringer/Multi-beam or Girder	60 ft	1,400	Fair
Squaw Prairie RD over Piscasaw Creek No. 004307100000000	2.0 MI NE Belvidere	1978	Box Beam or Girders - Multiple	145 ft	1,350	Fair
Poplar Grove RD over Br. of Beaver Creek No. 004500900000000	1.75 Mi. N. of IL173	1998	Culvert	22 ft	1,350	Good
Caledonia Road over S. Kinnikinnick Cr. No. 004500800000000	3.3 Mi. N. Caledonia	1995	Culvert	47 ft	1,000	Good
Shattuck RD over Mosquito Creek No. 004304800000000	3.0 MI E Belvidere	1958	Slab	60 ft	750	Fair
Russellville RD over Piscasaw Branch No. 004300700000000	5.0 MI SE Poplar Gr	1960	Slab	80 ft	700	Fair
Edson Road over Beaver CR No. 004306100000000	0.5 MI SE Poplar Gro	1973	Slab	80 ft	700	Poor
County Line RD over Mud Creek No. 004301800000000	8.0 MI NE Belvidere	1959	Culvert	25 ft	675	Poor
Russellville Road over Piscasaw Creek No. 004307200000000	1.5 M SE Poplar Grov	1980	Box Beam or Girders - Multiple	115 ft	650	Fair
Pearl ST over I 90 No. 004996100000000	4 MI E of US 20	2014	Stringer/Multi-beam or Girder	235 ft	650	Good
County Line RD over Br Piscasaw Creek No. 004308900000000	1.5 MI E of Capron	2004	Box Beam or Girders - Multiple	60 ft	600	Fair
Bloods Point Road over Cn RR No. 004308300000000	1.5 MI E Winn CO LN	1991	Box Beam or Girders - Multiple	216 ft	550	Fair
Pearl Street RD over Kingsbury Creek No. 004501000000000	At Dekalb Co. Line	1999	Culvert	23 ft	500	Good
Garden Prairie RD over Coon Creek No. 004309000000000	1.5 MI S Garden Pr	2005	Slab	157 ft	475	Fair
Townhall RD over I 90 No. 004996000000000	2 MI E of US 20	2014	Stringer/Multi-beam or Girder	235 ft	475	Good
Epworth RD over Kishwaukeeriver No. 004307800000000	3.MI E of Belvidere	1985	Box Beam or Girders - Multiple	215 ft	450	Fair
Beaverton Road over Beaver Creek No. 004307500000000	1.0 M E Poplar Grove	1983	Box Beam or Girders - Multiple	118 ft	375	Fair
Shattuck RD over I 90 No. 004992300000000	2.5 MI W Mchenry CO	2014	Stringer/Multi-beam or Girder	231 ft	350	Good
Carlson RD over Spring Creek No. 004307700000000	3.0 MI S Garden Prai	1984	Culvert	24 ft	325	Fair
Denny RD over Geryline CR No. 004310200000000	3.5 MI SE Poplar Grove	2021	Culvert	37 ft	300	Good
Tripp RD over I-90 No. 004996500000000	.5 MI S of US 20	2016	Stringer/Multi-beam or Girder	239 ft	300	Good
Rockton RD over N Kinnikinnick Creek No. 004306300000000	6.5 MI NE Roscoe	1973	Culvert	32 ft	250	Good
Crawford Road over Spring Creek No. 004306700000000	6.0 MI SE Belvidere	1977	Culvert	24 ft	250	Fair
County Line RD over I 90 No. 004992400000000	Mc Henry CO Line	2014	Stringer/Multi-beam or Girder	249 ft	250	Fair
County Line RD over Br Piscasaw Creek No. 004301500000000	1.5 E Capron	1968	Culvert	26 ft	225	Good
N Boone School RD over Beaver Creek No. 004302900000000	2.5 MI NW Capron	1957	Slab	60 ft	200	Fair
Free Church Road over N Kinnikinnick Creek No. 004306200000000	6.5 MI NE Roscoe	1973	Culvert	32 ft	200	Good
Reeds Crossing Roa over Mosquito Creek No. 004307900000000	4.0 MI SE Belvidere	1983	Channel Beam	60 ft	200	Good
Wheeler RD over Cn RR No. 004308700000000	2 MI N Dekalb CO LN	1998	Box Beam or Girders - Multiple	188 ft	200	Poor
Garden Prairie RD over Spring Creek No. 004500200000000	3.5 MI S Garden Prai	1958	Culvert	26 ft	175	Fair
Capron RD over Piscasaw Creek No. 004300600000000	2.5 MI S Capron	1958	Slab	125 ft	150	Poor
Mccurry RD over N Kinnikinnick Creek No. 004302600000000	5.5 MI NE Roscoe	1967	Culvert	45 ft	150	Fair
Huber Road over Mosquito Creek No. 004307000000000	3.5 MI SE Belvidere	1977	Culvert	50 ft	150	Poor
Capron RD over Br Piscasaw Creek No. 004307300000000	3.5 MI S Capron	1981	Box Beam or Girders - Multiple	48 ft	150	Poor
Centerville RD over Beaver Creek No. 004309600000000	2 MI W of Capron	2013	Box Beam or Girders - Multiple	120 ft	150	Good
Johnson RD over I 90 No. 004992200000000	.5 MI S Chrysler DR	2014	Stringer/Multi-beam or Girder	240 ft	150	Good
Garden Prairie Roa over I-90 No. 004999300000000	1 MI W. of Co. Line	2015	Stringer/Multi-beam or Girder	232 ft	150	Fair
Gustafson RD over Beaver Creek No. 004303400000000	3.5 MI NW Belvidere	1958	Slab	101 ft	125	Fair
Mill RD over Piscasaw Creek No. 004306600000000	1.5 MI S of Capron	1975	Channel Beam	122 ft	125	Poor
County Line RD over Spring Creek No. 004309400000000	2 MI SE Garden Prair	2016	Box Beam or Girders - Multiple	73 ft	100	Good
Townline RD over Br N Kinninnick CR No. 004500300000000	NW Corner Boone Co.	1960	Culvert	33 ft	100	Good
N Boone School RD over S. Kinnikinnick Crk. No. 004500400000000	3.0 MI N Caledonia	1965	Culvert	33 ft	100	Fair
N Boone School RD over S. Kinnikinnick Crk. No. 004500500000000	3.0 MI N Caledonia	1965	Culvert	33 ft	100	Good
N Boone School RD over S. Kinnikinnick Crk. No. 004500600000000	3.0 MI N Caledonia	1965	Culvert	27 ft	100	Good
Spring Center RD over I 90 No. 004996400000000	3 MI W Mchenry CO	2016	Stringer/Multi-beam or Girder	262 ft	75	Good
Blaine RD over Branch Beaver Creek No. 004306000000000	3.0 MI N Capron	1972	Culvert	33 ft	50	Good
Grade School Road over N Kinnikinnick Creek No. 004306400000000	8.0 MI NW Poplar Gro	1973	Culvert	26 ft	50	Good
Denny Road over Piscasaw Creek No. 004306800000000	2.5 SE Poplar Grove	1977	Channel Beam	122 ft	50	Poor
Grange Hall RD over E Br Piscasaw CR No. 004308100000000	2.5 M SE Poplar Grov	1986	Channel Beam	71 ft	50	Good
Blaine RD over Beaver Creek No. 004309900000000	3.0 MI NW Capron	2018	Culvert	22 ft	50	Good
Livingston School over South Kinnikinnick C No. 004310000000000	3.0 MI N Caledonia	2021	Culvert	34 ft	50	Good
Fruit Farm Road over Mosquito Creek No. 004307600000000	3.5 MI SE Belvidere	1982	Channel Beam	72 ft	25	Good
Leroy Center RD over Beaver Creek No. 004305100000000	3.0 MI NW Capron	1968	Culvert	26 ft	10	Fair
Bergen RD over N Kinnikinnick Creek No. 004308200000000	7.5 MI NW Poplar Grv	1989	Culvert	24 ft	10	Fair
Genoa Rd- FAS 37 over I 90 No. 004992100000000	.6 MI S of US 20	2014	Stringer/Multi-beam or Girder	264 ft	—	Good

Structure types in Boone County

Culvert	40	36.7%
Stringer/Multi-beam or Girder	34	31.2%
Slab	14	12.8%
Box Beam or Girders - Multiple	14	12.8%
Channel Beam	5	4.6%
Girder and Floorbeam System	1	0.9%
Frame	1	0.9%