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)

IL 94

Good

Over: DEER CREEK

6.3M N US136,CARTHAG, Hancock, IL

Built 1994 Load: 38.9 t ADT: 2,000

TR 0311

Good

Over: LONG CREEK

0.5MI NO. CARTHAGE, Hancock, IL

Built 1989 Load: 38.9 t ADT: 75

TR 225

Good

Over: BEAR CREEK

1.5 SW CARTHAGE, Hancock, IL

Built 1985 Load: 39.2 t ADT: 100

ILL 94

Good

Over: LAMOINE RIVER

1.4 MI N JCT 9 & 94, Hancock, IL

Built 1992 Load: 40.5 t ADT: 1,250

TR 261

Good

Over: CRYSTAL CREEK

2.6 SE HAMILTON, Hancock, IL

Built 1984 Load: 40.5 t ADT: 50

IL 96

Good

Over: CRYSTAL CREEK

3.1M S US136,HAMILTN, Hancock, IL

Built 1994 Load: 40.8 t ADT: 1,900

IL 94

Good

Over: CAMP CREEK

150 ft. S IL 9/94, Hancock, IL

Built 1982 Load: 41.1 t ADT: 1,250

TR 175

Good

Over: Lamoine River

0.18 mi E TR 232, Hancock, IL

Built 2020 Load: 41.8 t ADT: 50

IL 9/96

Good

Over: SPILLMAN CREEK

.5M W MERCER,PONTOOS, Hancock, IL

Built 1999 Load: 42.1 t ADT: 1,550

IL 96

Good

Over: DRAINAGE

1.4 M N OF US 136, Hancock, IL

Built 2013 Load: 42.1 t ADT: 1,100

FAS 431 (CH 30)

Good

Over: PANTHER CREEK

0.95 mi S FAS 429, Hancock, IL

Built 2013 Load: 42.1 t ADT: 225

FAS 1425

Good

Over: TRIB OF W FK BEAR CR

2 MI SE ELVASTON, Hancock, IL

Built 1994 Load: 42.4 t ADT: 325

US 136 WB

Good

Over: PRAIRIE CREEK

2.5 MI E CARTHAGE, Hancock, IL

Built 2007 Load: 45.4 t ADT: 4,000

US 136 EB

Good

Over: PRAIRIE CREEK

2.5 MI E CARTHAGE, Hancock, IL

Built 2007 Load: 45.4 t ADT: 4,000

US 136 EB

Good

Over: LAMOINE RIVER

6.8M E IL94,CARTHAGE, Hancock, IL

Built 1991 Load: 45.7 t ADT: 3,700

TR 71

Good

Over: Lamoine River

0.81 mi E TR 236, Hancock, IL

Built 2023 Load: 45.7 t ADT: 25

TR 196

Good

Over: Rock Creek

0.58 mi S FAS 427, Hancock, IL

Built 2019 Load: 46.0 t ADT: 100

IL 96

Good

Over: BRANCH RILEY CREEK

1.3 M S NAUVOO, Hancock, IL

Built 2011 Load: 46.3 t ADT: 1,050

US 136 WB

Good

Over: LAMOINE RIVER

7.9MI W JCT61, Hancock, IL

Built 2007 Load: 46.7 t ADT: 3,700

TR 136

Good

Over: Trib To Bear Creek

0.97 mi S of CH 11, Hancock, IL

Built 2018 Load: 48.0 t ADT: 75

TR 379

Good

Over: Whitney Slough

2.06 mi W FAS 1600, Hancock, IL

Built 2019 Load: 48.0 t ADT: 75

IL 96

Good

Over: DRAINAGE DITCH

.64M S IL 9, NIOTA, Hancock, IL

Built 2004 Load: 48.3 t ADT: 1,700

CO HWY 19

Good

Over: PANTHER CREEK

4.1 MI W OF PLYMOUTH, Hancock, IL

Built 1965 Load: 48.3 t ADT: 350

IL 96

Good

Over: RILEY CR

3.3 M S OF NAUVOO, Hancock, IL

Built 2011 Load: 48.9 t ADT: 1,050

US 136

Good

Over: HAMILTON SLOUGH

.1M E KEOKUK BRIDGE, Hancock, IL

Built 1954 Load: 49.2 t ADT: 10,500

IL 96 FAP 506

Good

Over: RAILROAD CR

.4 M S HAMILTON, Hancock, IL

Built 2011 Load: 50.9 t ADT: 2,600

IL 96

Good

Over: DRAINAGE DITCH

3.3M E NAUVOO CENTER, Hancock, IL

Built 1997 Load: 52.2 t ADT: 1,250

FAS 1600 (CH 12)

Good

Over: Mallard Creek

5 mi S Warsaw, Hancock, IL

Built 2023 Load: 53.8 t ADT: 375

IL 94

Good

Over: ROCK CREEK

5.7M N US136,CARTHAG, Hancock, IL

Built 2000 Load: 68.4 t ADT: 2,000

IL 94

Good

Over: GROVE CREEK

8.3M N US136,CARTHAG, Hancock, IL

Built 1994 Load: 73.9 t ADT: 1,450

IL 96

Good

Over: Sheridan Creek

0.9mi S of Nauvoo, Hancock, IL

Built 2020 Load: 79.4 t ADT: 1,050

US 136

Good

Over: W FORK BEAR CREEK

W MAPLE ST.,ELVASTON, Hancock, IL

Built 1976 Load: 97.2 t ADT: 2,900

TR 368

Poor

Over: LA HARPE CREEK

2.0 SE LAHARPE, Hancock, IL

Built 1909 ADT: 50

TR 180

Poor

Over: SHORT CREEK

3 MI NNE OF CARTHAGE, Hancock, IL

Built 1917 Load: 2.3 t ADT: 20

TR 28

Poor

Over: CRYSTAL GLEN CREEK

1.9 MI S HAMILTON, Hancock, IL

Built 1914 Load: 3.6 t ADT: 150

TR 28

Poor

Over: CRYSTAL GLEN CREEK

2.0 S HAMILTON, Hancock, IL

Built 1914 Load: 3.6 t ADT: 150

TR 226

Poor

Over: TRIB OF SPRING CR

0.5 MI N OF DISCO, Hancock, IL

Built 1919 Load: 5.5 t ADT: 50

TR 229

Poor

Over: MIDDLE CREEK

2 MI W OF MIDDLECR., Hancock, IL

Built 1961 Load: 5.8 t ADT: 75

TR 266

Poor

Over: LA MOINE RIVER

2.0 S DISCO, Hancock, IL

Built 1915 Load: 7.8 t ADT: 100

CO. HWY. 3

Poor

Over: LITTLE CREEK

0.5 MI N OF BURNSIDE, Hancock, IL

Built 1966 Load: 9.4 t ADT: 100

TR 239A

Poor

Over: MIDDLE CREEK

1.80 mi E IL 336, Hancock, IL

Built 1917 Load: 9.7 t ADT: 50

TR 57

Poor

Over: BRANCH OF CAMP CREEK

1.0 MI N COLUSA, Hancock, IL

Built 1925 Load: 10.4 t ADT: 50

TR 290

Poor

Over: SPRING CREEK

2.0 NW LAHARPE, Hancock, IL

Built 1911 Load: 11.0 t ADT: 50

TR 166

Poor

Over: CAMP CREEK

3.1 MI S DALLAS CITY, Hancock, IL

Built 1923 Load: 12.0 t ADT: 100

TR 93

Poor

Over: N FK OF RILEY CREK

0.5 MI E OF NAUVOO, Hancock, IL

Built 1974 Load: 15.9 t ADT: 75

TR 306

Poor

Over: FLOUR CREEK

2.0 MI W AUGUSTA, Hancock, IL

Built 1969 Load: 18.1 t ADT: 50

TR 104

Poor

Over: PANTHER CREEK

3.0 W STILLWELL, Hancock, IL

Built 1968 Load: 19.1 t ADT: 50

TR 27

Poor

Over: BRANCH OF SPRING CR.

3.0 MI NW LAHARPE, Hancock, IL

Built 1950 Load: 19.4 t ADT: 50

TR 71

Poor

Over: TILTON CREEK

2.5 MI SW DURHAM, Hancock, IL

Built 1928 Load: 19.4 t ADT: 75

FAS 424

Poor

Over: CAMP CREEK

2.6 MI. W. OF COLUSA, Hancock, IL

Built 1968 Load: 19.8 t ADT: 450

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