Total bridges
352
Public highway bridges in Peoria County
County profile · official public datasets
Peoria County, IL
352 public highway bridges tracked in the FHWA National Bridge Inventory: 24.1% rated Good, 57.7% Fair, 18.2% Poor.
- 352
- Public bridges
- 24.1%
- Good condition
- 18.2%
- Poor condition
The verdict
According to the Federal Highway Administration's 2024 National Bridge Inventory.
Peoria County posts a higher-than-median Poor-condition share among rated counties in the state across mid-size county bridge inventory.
- 96th
- of 102 on Poor share
- 18.2%
- Poor-condition share
- 352
- public highway bridges
- 1983
- 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.
Peoria County Bridge Snapshot
According to the Federal Highway Administration's 2024 National Bridge Inventory, Peoria County ranks #96 of 102 Illinois counties with at least 5 public highway bridges on Poor-condition share (lower share ranks better; currently 18.2%). Peoria County, Illinois contains 352 public highway bridges. Roughly 24.1% are rated “Good,” 57.7% “Fair,” and 18.2% “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.
Good condition
24.1%
85 of 352 rated 7-9
Fair condition
57.7%
203 of 352 rated 5-6
Poor condition
18.2%
64 of 352 rated 4 or below
In-state Poor-share rank
#96 of 102
Among Illinois counties with 5+ bridges, lower share ranks better
Condition distribution
Share of 352 NBI-tracked bridges by lowest applicable component rating.
Good 24.1% (85)
Fair 57.7% (203)
Poor 18.2% (64)
Peoria County's Poor-condition bridges carry 389,935 vehicle crossings a day
That is 22.8% of the county's reported daily bridge traffic on 18.2% of its bridges: Poor-condition structures carry more traffic than their share of the inventory. Each Poor bridge averages 6,093 crossings a day against 1,498 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 351 of 352 bridges in this county that report an average daily traffic count. Source: FHWA National Bridge Inventory, 2024 release.
30.1% of Peoria County's bridges have passed the 50-year mark
106 of the 352 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 24.1% 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 7.7% of the county's Poor-condition bridge traffic
US 150 WB over IL 29, built 1995, carries 30,000 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 64-bridge count understates how much of the daily burden sits on a single crossing.
Share is of the 389,935 daily crossings on Poor-rated bridges that report a traffic count. Source: FHWA National Bridge Inventory, 2024 release.
When Peoria County's bridges were built
352 bridges with a recorded construction year, grouped by decade
- 1900s 2
1900–1909
2 bridges
- 1910s 2
1910–1919
2 bridges
- 1920s 9
1920–1929
9 bridges
- 1930s 10
1930–1939
10 bridges
- 1940s 7
1940–1949
7 bridges
- 1950s 14
1950–1959
14 bridges
- 1960s
1960–1969
52 bridges
- 1970s
1970–1979
56 bridges
- 1980s
1980–1989
54 bridges
- 1990s
1990–1999
50 bridges
- 2000s
2000–2009
57 bridges
- 2010s
2010–2019
31 bridges
- 2020s 8
2020–2029
8 bridges
What this shows Construction peaked in the 2000s, when 57 of the county's bridges still in the inventory were built, which is 16.2% of those with a recorded year. That cohort is now 15 to 24 years old in the 2024 inventory. Its average build year (1983) matches the Illinois average (1979).
How Peoria County compares with Illinois's closest counties by inventory size
The 5 Illinois counties nearest Peoria County in number of bridges, with their condition splits. Its 18.2% Poor share is the 6th-lowest of these 6. Its average build year of 1983 against a peer-group mean of 1981 is in line with the group.
Showing the 5 closest of 101 Illinois counties eligible for comparison.
| County | Bridges | Good | Fair | Poor | Avg. built |
|---|---|---|---|---|---|
| Tazewell County | 358 | 25.4% | 60.1% | 14.5% | 1976 |
| Fayette County | 357 | 56.6% | 38.4% | 5% | 1976 |
| Peoria County (this page) | 352 | 24.1% | 57.7% | 18.2% | 1983 |
| Macon County | 346 | 25.7% | 58.7% | 15.6% | 1984 |
| DuPage County | 344 | 37.5% | 54.4% | 8.1% | 1985 |
| Kankakee County | 344 | 40.1% | 53.5% | 6.4% | 1982 |
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 Peoria 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 Peoria County, both outside Illinois so the neighborhoods are not the same-state size table above.
Similar inventory size
Nearest county inventories outside IL (352 bridges here).
- Henrico County, VA · 352 bridges
- Union County, NC · 353 bridges
- Weakley County, TN · 351 bridges
- Whatcom County, WA · 354 bridges
Similar average build year
Nearest mean year-built outside IL (1983 here).
- Dallas County, TX · avg 1983 · 3,230 bridges
- Bexar County, TX · avg 1983 · 2,342 bridges
- Sedgwick County, KS · avg 1983 · 1,333 bridges
- Bernalillo County, NM · avg 1983 · 496 bridges
Source: FHWA National Bridge Inventory, 2024 release. Peers floor at 10 bridges so stub inventories cannot own the match.
Poor-condition bridges (64)
JOHNSON FARM RD
PoorOver: BR LAMARSHCREEK
SW-17-T8NR7E, Peoria, IL
Built 1979 Load: 37.6 t ADT: 100
ILL 78
PoorOver: I-74
5 MI W OF BRIMFIELD, Peoria, IL
Built 1967 Load: 38.6 t ADT: 550
CEMETERY ROAD-TR
PoorOver: BR OF WALNUT CREEK
S.CTR-14-T10NR5E, Peoria, IL
Built 1982 Load: 39.9 t ADT: 10
ILL 8 FARMINGTON R
PoorOver: DRY RUN CREEK
W PEO NEAR B.PARK, Peoria, IL
Built 1928 Load: 41.5 t ADT: 9,400
PARKS SCH RD
PoorOver: BR KICKAPOO CREEK
SE1/4 2 RADNOR TWP, Peoria, IL
Built 1975 Load: 41.5 t ADT: 325
BENEDICT ST
PoorOver: SENACHWINE CREEK
NW QTR 17 CHILLICOTH, Peoria, IL
Built 1979 Load: 42.8 t ADT: 275
ILL 78
PoorOver: SPOON RIVER
3 MI N OF LAURA, Peoria, IL
Built 1927 Load: 43.7 t ADT: 2,450
CHARTER OAK ROAD
PoorOver: BR KICKAPOO CREEK
S CTR 15 KICKAPOO, Peoria, IL
Built 1963 Load: 51.2 t ADT: 2,000
SB ILL 29
PoorOver: DICKISON RUN CREEK
0.5 MI N MOSSVILLE, Peoria, IL
Built 1937 Load: 54.4 t ADT: 14,400
BARRETT RD
PoorOver: SWAB RUN CREEK
NE COR SEG18 TIONR5E, Peoria, IL
Built 1975 Load: 87.8 t ADT: 150
CH D41
PoorOver: NIXON RUN
NW1/4-29-ROSEFIELD, Peoria, IL
Built 1993 Load: 88.8 t ADT: 275
ILL 8
PoorOver: TIBER CREEK
2.2 MI E OF ILL 78, Peoria, IL
Built 1971 Load: 89.1 t ADT: 1,650
ILL 6
PoorOver: STREAM
0.5 MI W OF ILL 40, Peoria, IL
Built 1982 Load: 89.1 t ADT: 15,500
I-74
PoorOver: BIG HOLLOW CREEK
0.5 MI E OF ILL 6, Peoria, IL
Built 1965 Load: 89.1 t ADT: 16,250
Read our methodology - how this data is sourced, computed, and verified.
Related
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.