Hancock County, IL

291 public highway bridges

Hancock County Bridge Snapshot

Hancock County, Illinois contains 291 public highway bridges in the FHWA National Bridge Inventory. Roughly 41.2% are rated “Good,” 37.8% “Fair,” 20.3% “Poor,” and 20.3% are classified as structurally deficient — the federal designation for spans whose deck, superstructure, or substructure has been rated 4 or below on the 0–9 NBI scale. Structurally deficient does not mean unsafe to cross; it means the bridge is on the priority list for repair or replacement.

Inspections in IL are conducted by certified engineers from the state Department of Transportation on a 24-month cycle, and results are reported back to the FHWA each spring. The list below shows every NBI-tracked bridge in the county, sorted by inventory load rating. Use the “Sort by” controls to surface the lowest-rated spans first, and click any row for full inspection history, traffic counts, and condition trends.

Source: FHWA National Bridge Inventory. See methodology for full definitions.

291

Total Bridges

41.2%

Good

20.3%

Poor

20.3%

Structurally Deficient

Condition Distribution

Good

41.2% (120)

Fair

37.8% (110)

Poor

20.3% (59)

SD

20.3% (59)

All Bridges (291)

Sort:

US 136

Over: IL 336

0.5 MI E CARTHAGE, Hancock, IL

Built 2006 ADT: 4,200

TOLEDO & PEORIA WE

Over: IL 9

3.1M E IL94, LAHARPE, Hancock, IL

Built 1930 ADT: 1,300

TR 39

Over: BRANCH OF TILTON CR.

1.0 MI W DURHAM, Hancock, IL

Built 1914 ADT: 25

TR 186

Over: BRANCH OF TILTON CR.

1.0 MI W DURHAM, Hancock, IL

Built 1919 Load: 1.9 t ADT: 50

TR 399

Over: THE BLUFF CANAL

6.5 S WARSAW, Hancock, IL

Built 1906 Load: 5.8 t ADT: 75

TR 218

Over: BRONSON CREEK

3.5 SE BENTLEY, Hancock, IL

Built 1906 Load: 6.5 t ADT: 25

TR 242

Over: LA MOINE RIV

1.0 W LACROSSE, Hancock, IL

Built 1951 Load: 7.8 t ADT: 50

TR 228

Over: BRONSON CREEK

2.0 NE DENVER, Hancock, IL

Built 1922 Load: 8.4 t ADT: 25

TR 8A

Over: SHIPE CREEK

3.0 NW TIOGA, Hancock, IL

Built 1915 Load: 9.4 t ADT: 50

TR 300

Over: TRIB OF LA MOINE R

0.2 MI N OF LA HARPE, Hancock, IL

Built 1908 Load: 17.2 t ADT: 75

CO HWY 12

Over: SHUHART CREEK

1 MI S OF WARSAW, Hancock, IL

Built 1956 Load: 17.5 t ADT: 500

TR 239B

Over: LITTLE BEAR CREEK

1.5 MI SE ELVASTON, Hancock, IL

Built 1960 Load: 17.5 t ADT: 50

2ND STREET

Over: TRIB TO LAMOINE

LAHARPE, Hancock, IL

Built 1921 Load: 17.5 t ADT: 175

TR 98

Over: W FK OF BEAR CREEK

0.1 MI S OF ELVASTON, Hancock, IL

Built 1918 Load: 19.4 t ADT: 50

TR 226

Over: BRANCH OF SPRING CR.

1.3 MI NE DURHAM, Hancock, IL

Built 1950 Load: 20.1 t ADT: 100

TR 110

Over: SPILLMAN CREEK

2.5 SW PONTOOSUC, Hancock, IL

Built 1915 Load: 21.4 t ADT: 50

TR 356

Over: BRONSON CREEK

1.5 MI NW PLYMOUTH, Hancock, IL

Built 1959 Load: 22.4 t ADT: 100

TR 46

Over: LARRY CREEK

6.0 S NAUVOO, Hancock, IL

Built 1969 Load: 23.0 t ADT: 50

TR 222

Over: PRAIRIE CREEK

3.5 MI NE CARTHAGE, Hancock, IL

Built 1966 Load: 24.0 t ADT: 75

TR 267

Over: BIG MEADOW SLOUGH

1 MI W OF BENTLEY, Hancock, IL

Built 1975 Load: 24.0 t ADT: 75

TR 57

Over: TYSON CREEK

3.0 MI S NIOTA, Hancock, IL

Built 1967 Load: 24.3 t ADT: 75

FAS 1425

Over: BEAR CREEK

1 MI S OF BASCO, Hancock, IL

Built 1970 Load: 24.3 t ADT: 150

TR 214A

Over: LONG CREEK

3.7 NE CARTHAGE, Hancock, IL

Built 1973 Load: 24.3 t ADT: 75

TR 57

Over: TILTON CREEK

1.5 MI SW DURHAM, Hancock, IL

Built 1918 Load: 24.3 t ADT: 50

TR 180

Over: DEER CREEK

1.5 MI NW BURNSIDE, Hancock, IL

Built 1970 Load: 24.9 t ADT: 75

TR 84

Over: CHANEY CREEK

1.5 MI NW ELVASTON, Hancock, IL

Built 1959 Load: 25.3 t ADT: 150

FAS 1425

Over: SLATER CREEK

2.3 MI SOUTH OF BASC, Hancock, IL

Built 1973 Load: 25.6 t ADT: 100

CO HWY 18

Over: LA MOINE RIVER

3 MI E OF BURNSIDE, Hancock, IL

Built 1972 Load: 25.9 t ADT: 200

TR 36

Over: ROBINSON CREEK

2.0 MI NE NAUVOO, Hancock, IL

Built 1969 Load: 25.9 t ADT: 50

TR 72

Over: CHANEY CREEK

2.0 NW ELVASTON, Hancock, IL

Built 1969 Load: 26.2 t ADT: 25

TR 190A

Over: SLATER CREEK

2.0 MI NW BOWEN, Hancock, IL

Built 1965 Load: 26.6 t ADT: 25

TR 72

Over: N FK LARRY'S CREEK

3.0 SW POWELLTON, Hancock, IL

Built 1923 Load: 26.6 t ADT: 25

TR 9

Over: VOEL CREEK

2.2 NE LAHARPE, Hancock, IL

Built 1952 Load: 27.2 t ADT: 75

TR 239

Over: RAILROAD CREEK

2.0 SE HAMILTON, Hancock, IL

Built 1980 Load: 27.5 t ADT: 75

TR 239

Over: W FK OF BEAR CREEK

1.5 S ELVASTON, Hancock, IL

Built 1975 Load: 28.2 t ADT: 50

FAS 1425

Over: CAMP CREEK

1.5 SW COLUSA, Hancock, IL

Built 1970 Load: 28.2 t ADT: 20

TR 128

Over: CAMP CREEK

2.5 SW COLUSA, Hancock, IL

Built 1974 Load: 29.2 t ADT: 50

FAS-428 (CH-11)

Over: BEAR CREEK

2.5 MI W OF BASCO, Hancock, IL

Built 1952 Load: 29.5 t ADT: 500

TR 327

Over: LITTLE BEAR CREEK

5 MI SE WARSAW, Hancock, IL

Built 1976 Load: 31.1 t ADT: 50

IL 9

Over: DRAINAGE DITCH

0.13 S IL 96, Hancock, IL

Built 1982 Load: 32.4 t ADT: 1,725

CO HWY 5

Over: CEDAR CREEK

2.5 SE OF F. GREEN, Hancock, IL

Built 1981 Load: 32.4 t ADT: 75

CO HWY 17

Over: LA MOINE RIVER

6.0 E CARTHAGE, Hancock, IL

Built 1998 Load: 32.4 t ADT: 250

FAS 1425

Over: LONG CREEK

1 MI W OF FERRIS, Hancock, IL

Built 1988 Load: 32.4 t ADT: 20

CO HWY 32

Over: CEDAR GLEN CREEK

0.43 MI E OF WARSAW, Hancock, IL

Built 1960 Load: 32.4 t ADT: 1,600

TR 385A

Over: FLOUR CREEK

1.8 MI N OF AUGUSTA, Hancock, IL

Built 1982 Load: 32.4 t ADT: 125

TR 158

Over: BIG MEADOW DITCH

3.0 MI S CARTHAGE, Hancock, IL

Built 1980 Load: 32.4 t ADT: 75

TR 176

Over: LONG CREEK

1 MI N OF CARTHAGE, Hancock, IL

Built 1982 Load: 32.4 t ADT: 125

TR 170

Over: SLATER CREEK

2.0 MI SW DENVER, Hancock, IL

Built 1982 Load: 32.4 t ADT: 50

TR 389

Over: SLATTER CREEK

1.5 MI. N.W. BOWEN, Hancock, IL

Built 1989 Load: 32.4 t ADT: 25

TR 342

Over: ROCK CREEK

2.0 N FOUNTAIN GREEN, Hancock, IL

Built 1981 Load: 32.4 t ADT: 100

Read our methodology — how this data is sourced, computed, and verified.

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Data sourced from official U.S. government datasets. See our methodology for details. Retrieved and formatted by PlainBridges Editorial

Reviewed byPlainbridges Editorial, Plain Bridges Editorial Team · June 5, 2026