County profile · official public datasets

Henry County, IL

328 public highway bridges tracked in the FHWA National Bridge Inventory: 49.4% rated Good, 39.6% Fair, 11% Poor.

328
Public bridges
49.4%
Good condition
11%
Poor condition

The verdict

According to the Federal Highway Administration's 2024 National Bridge Inventory.

Henry County posts a higher-than-median Poor-condition share among rated counties in the state across mid-size county bridge inventory.

79th
of 102 on Poor share
11%
Poor-condition share
328
public highway bridges
1978
avg year built

Poor is an FHWA condition category from the lowest applicable component rating (4 or below), not a live crossing-safety or closure decision. Rankings cover counties with at least five public highway bridges.

Henry County Bridge Snapshot

According to the Federal Highway Administration's 2024 National Bridge Inventory, Henry County ranks #79 of 102 Illinois counties with at least 5 public highway bridges on Poor-condition share (lower share ranks better; currently 11%). Henry County, Illinois contains 328 public highway bridges. Roughly 49.4% are rated “Good,” 39.6% “Fair,” and 11% “Poor.” Poor means the lowest applicable deck, superstructure, substructure, or culvert rating is 4 or below on the 0–9 NBI scale. It is a condition category, not a live safety or closure decision.

Responsible agencies inspect covered bridges on risk-based intervals under current NBIS rules and submit inventory data to FHWA annually. The list below shows every NBI-tracked bridge in the county. Use the “Sort by” controls to change the ordering, and click any row for its reported inspection date, traffic count, and condition fields.

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

Total bridges

328

Public highway bridges in Henry County

Good condition

49.4%

162 of 328 rated 7-9

Fair condition

39.6%

130 of 328 rated 5-6

Poor condition

11%

36 of 328 rated 4 or below

In-state Poor-share rank

#79 of 102

Among Illinois counties with 5+ bridges, lower share ranks better

Condition distribution

Share of 328 NBI-tracked bridges by lowest applicable component rating.

Good
49.4% (162)
Fair
39.6% (130)
Poor
11% (36)

Henry County's Poor-condition bridges carry 76,285 vehicle crossings a day

That is 10.8% of the county's reported daily bridge traffic on 11% of its bridges: Poor-condition structures carry less traffic than their share of the inventory. Each Poor bridge averages 2,119 crossings a day against 833 for a Good-condition one. A Poor rating is a condition category, not a closure or a live safety judgement; it means the lowest applicable component rating is 4 or below.

Computed over the 327 of 328 bridges in this county that report an average daily traffic count. Source: FHWA National Bridge Inventory, 2024 release.

39.6% of Henry County's bridges have passed the 50-year mark

130 of the 328 bridges with a recorded construction year were built in 1974 or earlier. Age alone is not a defect: a well-maintained older bridge can rate Good, and 49.4% of this county's inventory does. Even so, this older cohort is the population from which future Poor ratings are drawn, which is why the age profile below matters alongside the condition split above.

Cutoff derives from the 2024 release year minus a 50-year design life. Source: FHWA National Bridge Inventory, 2024 release.

One structure carries 14.2% of the county's Poor-condition bridge traffic

FAI 80 SB over CLEVELAND RD/FAP595, built 1965, carries 10,800 vehicles a day, the most of any Poor-rated structure here. The county's Poor-condition exposure is concentrated rather than evenly spread, so the 36-bridge count understates how much of the daily burden sits on a single crossing.

Share is of the 76,285 daily crossings on Poor-rated bridges that report a traffic count. Source: FHWA National Bridge Inventory, 2024 release.

When Henry County's bridges were built

328 bridges with a recorded construction year, grouped by decade

bridges

What this shows Construction peaked in the 1960s, when 82 of the county's bridges still in the inventory were built, which is 25% of those with a recorded year. That cohort is now 55 to 64 years old in the 2024 inventory. Its average build year (1978) matches the Illinois average (1979).

Source FHWA National Bridge Inventory (year built) As of 2024 NBI release

How Henry County compares with Illinois's closest counties by inventory size

The 5 Illinois counties nearest Henry County in number of bridges, with their condition splits. Its 11% Poor share is the 5th-lowest of these 6. Its average build year of 1978 against a peer-group mean of 1978 is in line with the group.

Showing the 5 closest of 101 Illinois counties eligible for comparison.

Bridge inventory size and condition shares for Henry County and the 5 Illinois counties closest to it in inventory size
County Bridges Poor
Kane County 336 6.3%
Shelby County 335 7.2%
Pike County 330 10%
Henry County (this page) 328 11%
Christian County 321 16.8%
Adams County 319 6%

Each share is of that county's own total tracked bridges; peers are the counties with 5 or more bridges whose inventory size is closest to Henry County's. Source: FHWA National Bridge Inventory, 2024 release.

Nationwide counties with similar inventory size or average build year

Two NBI-derived peer sets for Henry County, both outside Illinois so the neighborhoods are not the same-state size table above.

Similar inventory size

Nearest county inventories outside IL (328 bridges here).

Similar average build year

Nearest mean year-built outside IL (1978 here).

Source: FHWA National Bridge Inventory, 2024 release. Peers floor at 10 bridges so stub inventories cannot own the match.

All 328 Good 162 Fair 130 Poor 36

Good-condition bridges (162)

TR 54

Good

Over: UNNAMED CREEK

4.0 MI SE ALPHA, Henry, IL

Built 2005 Load: 32.4 t ADT: 100

TR 384

Good

Over: GREEN RIVER

3.5 MI SW HOOPPOLE, Henry, IL

Built 2005 Load: 32.4 t ADT: 50

TR 116

Good

Over: MINERAL CREEK

5.5 MI SW GENESEO, Henry, IL

Built 2005 Load: 32.4 t ADT: 50

TR 257

Good

Over: SPRING CREEK

2.5 MI NE CAMBRIDGE, Henry, IL

Built 2006 Load: 32.4 t ADT: 25

TR 205

Good

Over: BR OF OAT CREEK

6.0 MI SW ATKINSON, Henry, IL

Built 2007 Load: 32.4 t ADT: 75

TR6A

Good

Over: UNNAMED STREAM

3MI NW OF ORION, Henry, IL

Built 2007 Load: 32.4 t ADT: 50

1600N

Good

Over: MOSQUITO CREEK

.36MI W OF 350E, Henry, IL

Built 2007 Load: 32.4 t ADT: 50

TR 407

Good

Over: Spoon Creek

1 MI SW OF GALVA, Henry, IL

Built 2012 Load: 32.4 t ADT: 100

TR 70

Good

Over: MUD CREEK

.1 MI SE COLONA, Henry, IL

Built 2012 Load: 32.4 t ADT: 75

TR 228

Good

Over: BIG SLOUGH DITCH

2.6 MI NE OF GENESEO, Henry, IL

Built 2015 Load: 32.4 t ADT: 50

TR 379

Good

Over: DUGOUT CREEK

2 MI NE WOODHULL, Henry, IL

Built 2013 Load: 32.4 t ADT: 75

TR 68

Good

Over: CAMP CREEK

2.1 MI NW ANDOVER, Henry, IL

Built 2014 Load: 32.4 t ADT: 75

TR 114

Good

Over: CAMP CREEK

1.5 MI NE ANDOVER, Henry, IL

Built 2014 Load: 32.4 t ADT: 25

TR 251

Good

Over: TRIB OF CAMP CREEK

2.8 MI NW OF ANDOVER, Henry, IL

Built 2015 Load: 32.4 t ADT: 75

TR 8

Good

Over: BR PARKER RUN CRK

1.5 MI NE NEW WINDSR, Henry, IL

Built 2016 Load: 32.4 t ADT: 50

TR-276

Good

Over: BR OF OAT CREEK

8 MI NE CAMBRIDGE, Henry, IL

Built 2017 Load: 32.4 t ADT: 50

TR 81-B

Good

Over: GREEN RIVER LATERAL

2300 N 1130 E, Henry, IL

Built 1991 Load: 32.4 t ADT: 375

C.H. 5 FAS 232

Good

Over: MUD CR.

41/2 MI. S. ATKINSON, Henry, IL

Built 2005 Load: 32.4 t ADT: 1,500

FAS 1191

Good

Over: STREAM

0.5MI E COAL VALLEY, Henry, IL

Built 1956 Load: 32.4 t ADT: 1,200

FAS 232

Good

Over: STREAM

6.0MI NW OF KEWANEE, Henry, IL

Built 2009 Load: 32.4 t ADT: 1,500

TR 225

Good

Over: CREEK

1.7 MI W OF ORION, Henry, IL

Built 2009 Load: 32.4 t ADT: 100

SO STATE STREET

Good

Over: GENESEO CREEK

SO CENTER OF GENESEO, Henry, IL

Built 1982 Load: 32.4 t ADT: 3,050

SOUTH STATE STREET

Good

Over: GENESEO CREEK

SO CENTER OF GENESEO, Henry, IL

Built 1985 Load: 32.4 t ADT: 2,700

LATHROP ST/PATRIOT

Good

Over: GRADDETT DITCH

E EDGE OF ANNAWAN, Henry, IL

Built 2009 Load: 32.4 t ADT: 575

TR 1

Good

Over: STREAM

NE-1-T13NR1E, Henry, IL

Built 1995 Load: 32.4 t ADT: 10

IL 78

Good

Over: WILDCAT CREEK

1.3 MI S HOOPOLE RD, Henry, IL

Built 1981 Load: 33.4 t ADT: 1,300

TR 384

Good

Over: ILL & MISS CANAL

2 MI NE ATKINSON, Henry, IL

Built 1983 Load: 34.3 t ADT: 50

TR 274

Good

Over: BR OF EDWARDS RIVER

5.5 MI NE BISHOPHILL, Henry, IL

Built 1901 Load: 34.7 t ADT: 10

CH 20

Good

Over: MAIN UNION SP. DITCH

41/2 MI. S.W. HOOPPO, Henry, IL

Built 2008 Load: 34.7 t ADT: 300

TR 379

Good

Over: BR. S. EDWARDS RIVER

3.0 MI W BISHOP HILL, Henry, IL

Built 1978 Load: 35.0 t ADT: 75

US 6

Good

Over: SPRING CREEK TRIB.

1.5 MI W OF ATKINSON, Henry, IL

Built 1993 Load: 35.3 t ADT: 2,400

US 150

Good

Over: UNNAMED STREAM

2.5 MI. S. OF ORION, Henry, IL

Built 1995 Load: 35.3 t ADT: 2,950

TR 152

Good

Over: EDWARDS RIVER

2.0 MI SW CAMBRIDGE, Henry, IL

Built 1978 Load: 35.3 t ADT: 50

ILL ROUTE 82

Good

Over: SPRING CREEK

3 MI N OF CAMBRIDGE, Henry, IL

Built 1975 Load: 36.0 t ADT: 1,800

GRANGE RD

Good

Over: BLUE JOINT DITCH

4 MI. NE. OF GENESEO, Henry, IL

Built 1995 Load: 36.3 t ADT: 350

IL 78

Good

Over: DRAINAGE DITCH

S EDGE OF N JCT IL92, Henry, IL

Built 2002 Load: 36.9 t ADT: 1,400

TR 109

Good

Over: DRAINAGE DITCH

2.5 MI N ATKINSON, Henry, IL

Built 2018 Load: 36.9 t ADT: 50

TR 266

Good

Over: SOUTH EDWARDS RIVER

2 MI E BISHOP HILL, Henry, IL

Built 1977 Load: 38.6 t ADT: 50

IL 81

Good

Over: CAMP CREEK TRIB.

.7 MI W OF CAMBRIDGE, Henry, IL

Built 1994 Load: 38.9 t ADT: 1,650

TR 323

Good

Over: PARKER RUN

2.5 MI N NEW WINDSOR, Henry, IL

Built 1962 Load: 39.2 t ADT: 75

GRANGE RD (FAS 122

Good

Over: BLUE JOINT DITCH

3 MI. NE. OF GENESEO, Henry, IL

Built 1991 Load: 39.5 t ADT: 750

IL 92

Good

Over: BIG SLOUGH DITCH

0.7 MI E GRANGE ROAD, Henry, IL

Built 1996 Load: 40.2 t ADT: 1,050

IL 82

Good

Over: DRAINAGE DITCH

2.98 MI S JCT ILL 92, Henry, IL

Built 2009 Load: 40.5 t ADT: 1,800

CH 14

Good

Over: MUD CR

5 MI S OF ATKINSON, Henry, IL

Built 2019 Load: 40.5 t ADT: 250

TR 382-B

Good

Over: MUD CREEK

5.5 MI NW KEWANEE, Henry, IL

Built 1977 Load: 40.8 t ADT: 75

ULAH ROAD (CH 21)

Good

Over: DRAINAGE DITCH

N. EDGE OF ULAH, Henry, IL

Built 1995 Load: 42.4 t ADT: 150

IL 81

Good

Over: BNRR

.05MI E OF BENGSTON, Henry, IL

Built 2016 Load: 43.1 t ADT: 1,900

US 6

Good

Over: SHABBONA SPECL DITCH

2 MI. E. ATKINSON, Henry, IL

Built 1993 Load: 43.4 t ADT: 1,500

US ROUTE 34

Good

Over: INDIAN CREEK

0.2 MI W JCT ILL 78, Henry, IL

Built 1958 Load: 43.7 t ADT: 2,400

TR 94

Good

Over: CAMP CREEK

1.5 MI N ANDOVER, Henry, IL

Built 2008 Load: 43.7 t ADT: 50

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

Related

Browse all → | Rankings →
Data sourced from official public datasets. See our methodology for details. Retrieved and formatted by PlainBridges

Every figure on PlainBridges is rendered directly from federal source data, no number is typed in by an editor. This page draws directly on federal source data, no figure is typed in by an editor. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. NBI condition categories reflect the latest reported inventory record, not a live safety, closure, or travel decision.