Total bridges
185
Public highway bridges in Lawrence County
County profile · official public datasets
Lawrence County, IL
185 public highway bridges tracked in the FHWA National Bridge Inventory: 36.2% rated Good, 41.1% Fair, 22.7% Poor.
- 185
- Public bridges
- 36.2%
- Good condition
- 22.7%
- Poor condition
The verdict
According to the Federal Highway Administration's 2024 National Bridge Inventory.
Lawrence County posts a higher-than-median Poor-condition share among rated counties in the state across mid-size county bridge inventory.
- 101st
- of 102 on Poor share
- 22.7%
- Poor-condition share
- 185
- public highway bridges
- 1975
- 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.
Lawrence County Bridge Snapshot
According to the Federal Highway Administration's 2024 National Bridge Inventory, Lawrence County ranks #101 of 102 Illinois counties with at least 5 public highway bridges on Poor-condition share (lower share ranks better; currently 22.7%). Lawrence County, Illinois contains 185 public highway bridges. Roughly 36.2% are rated “Good,” 41.1% “Fair,” and 22.7% “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
36.2%
67 of 185 rated 7-9
Fair condition
41.1%
76 of 185 rated 5-6
Poor condition
22.7%
42 of 185 rated 4 or below
In-state Poor-share rank
#101 of 102
Among Illinois counties with 5+ bridges, lower share ranks better
Condition distribution
Share of 185 NBI-tracked bridges by lowest applicable component rating.
Good 36.2% (67)
Fair 41.1% (76)
Poor 22.7% (42)
Lawrence County's Poor-condition bridges carry 94,890 vehicle crossings a day
That is 38.7% of the county's reported daily bridge traffic on 22.7% of its bridges: Poor-condition structures carry more traffic than their share of the inventory. Each Poor bridge averages 2,259 crossings a day against 803 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 185 of 185 bridges in this county that report an average daily traffic count. Source: FHWA National Bridge Inventory, 2024 release.
42.7% of Lawrence County's bridges have passed the 50-year mark
79 of the 185 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 36.2% 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 7.6% of the county's Poor-condition bridge traffic
FAP-327WB (US-50) over FAS-1827, built 1958, carries 7,200 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 42-bridge count understates how much of the daily burden sits on a single crossing.
Share is of the 94,890 daily crossings on Poor-rated bridges that report a traffic count. Source: FHWA National Bridge Inventory, 2024 release.
When Lawrence County's bridges were built
185 bridges with a recorded construction year, grouped by decade
- 1900s 10
1900–1909
10 bridges
- 1910s 2
1910–1919
2 bridges
- 1920s 6
1920–1929
6 bridges
- 1930s
1930–1939
11 bridges
- 1940s 2
1940–1949
2 bridges
- 1950s
1950–1959
21 bridges
- 1960s
1960–1969
20 bridges
- 1970s
1970–1979
18 bridges
- 1980s
1980–1989
27 bridges
- 1990s
1990–1999
25 bridges
- 2000s
2000–2009
21 bridges
- 2010s
2010–2019
14 bridges
- 2020s 8
2020–2029
8 bridges
What this shows Construction peaked in the 1980s, when 27 of the county's bridges still in the inventory were built, which is 14.6% of those with a recorded year. That cohort is now 35 to 44 years old in the 2024 inventory. Its average build year (1975) matches the Illinois average (1979).
How Lawrence County compares with Illinois's closest counties by inventory size
The 5 Illinois counties nearest Lawrence County in number of bridges, with their condition splits. Its 22.7% Poor share is the 6th-lowest of these 6. Its average build year of 1975 against a peer-group mean of 1980 is 5 years older.
Showing the 5 closest of 101 Illinois counties eligible for comparison.
| County | Bridges | Good | Fair | Poor | Avg. built |
|---|---|---|---|---|---|
| De Witt County | 192 | 57.3% | 37% | 5.7% | 1980 |
| Clinton County | 190 | 56.3% | 36.3% | 7.4% | 1976 |
| Saline County | 185 | 71.4% | 23.8% | 4.9% | 1985 |
| Lawrence County (this page) | 185 | 36.2% | 41.1% | 22.7% | 1975 |
| Jasper County | 181 | 70.7% | 24.3% | 5% | 1982 |
| Carroll County | 179 | 37.4% | 52% | 10.6% | 1979 |
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 Lawrence 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 Lawrence County, both outside Illinois so the neighborhoods are not the same-state size table above.
Similar inventory size
Nearest county inventories outside IL (185 bridges here).
- Chambers County, AL · 185 bridges
- Maui County, HI · 185 bridges
- Cass County, IN · 185 bridges
- Clay County, IN · 185 bridges
Similar average build year
Nearest mean year-built outside IL (1975 here).
- San Bernardino County, CA · avg 1975 · 1,422 bridges
- Lane County, OR · avg 1975 · 1,010 bridges
- Fulton County, GA · avg 1975 · 775 bridges
- Westmoreland County, PA · avg 1975 · 620 bridges
Source: FHWA National Bridge Inventory, 2024 release. Peers floor at 10 bridges so stub inventories cannot own the match.
Poor-condition bridges (42)
TR-58
PoorOver: THE SLOUGH
4 MI ESE CHAUNCEY, Lawrence, IL
Built 1909 Load: 0.0 t ADT: 25
TR-92
PoorOver: B & O RR
0.5 MI W BRIDGEPORT, Lawrence, IL
Built 1920 Load: 12.3 t ADT: 100
TR 5
PoorOver: BRUSHY FORK
1 MI NW BIRDS, Lawrence, IL
Built 1916 Load: 12.6 t ADT: 50
CH-5
PoorOver: BRUSHY FORK
1 MI W PINKSTAFF, Lawrence, IL
Built 1971 Load: 17.5 t ADT: 175
FAS-801
PoorOver: MAD CREEK
1 MI E CHAUNCEY, Lawrence, IL
Built 1973 Load: 17.8 t ADT: 325
FAS-801
PoorOver: BRUSHY FORK SYSTEM
EAST EDGE BIRDS, Lawrence, IL
Built 1909 Load: 18.5 t ADT: 525
TR-37
PoorOver: BIRCH CREEK
2.5 MI WSW BIRDS, Lawrence, IL
Built 1974 Load: 18.8 t ADT: 75
FR 505
PoorOver: STREAM
1 MI N BRIDGEPORT, Lawrence, IL
Built 1910 Load: 19.4 t ADT: 225
FAS-807
PoorOver: LITTLE BONPAS
4 MI S SUMNER, Lawrence, IL
Built 1909 Load: 19.4 t ADT: 1,100
TR-10
PoorOver: SHIRLEY CREEK
1 MI W SUMNER, Lawrence, IL
Built 1909 Load: 19.4 t ADT: 75
FAS-806
PoorOver: STREAM
BRIDGEPORT, Lawrence, IL
Built 1922 Load: 19.4 t ADT: 1,700
FAS-806
PoorOver: EAGLE BRANCH
4 MI SE CHAUNCEY, Lawrence, IL
Built 1945 Load: 20.1 t ADT: 150
CH-12
PoorOver: OTTER POND DRAIN DT
1.5 MI NE LAWRENCEVL, Lawrence, IL
Built 1931 Load: 20.1 t ADT: 50
TR-142
PoorOver: DRAIN DITCH
N EDGE MT CARMEL APT, Lawrence, IL
Built 1967 Load: 20.7 t ADT: 35
CH-15
PoorOver: BRANCH RACCOON CREEK
8 MI W ST FRANCISVIL, Lawrence, IL
Built 1972 Load: 24.3 t ADT: 75
FAS-807 (CH-6)
PoorOver: LITTLE BONPAS CREEK
4 MI S SUMNER, Lawrence, IL
Built 1939 Load: 24.6 t ADT: 1,100
FAS 1808/FR 550
PoorOver: STREAM
JCT SBI-12 & US-50B, Lawrence, IL
Built 1925 Load: 25.3 t ADT: 25
TR-263
PoorOver: RACCOON CREEK
6.25 MI S BRIDGEPORT, Lawrence, IL
Built 1995 Load: 25.6 t ADT: 50
FAS-805
PoorOver: RACOON CREEK
7 MI W ST FRANCISVLE, Lawrence, IL
Built 1963 Load: 26.2 t ADT: 225
FAP-327WB (US-50)
PoorOver: FAS-1827
LAW-VINCENNES AP RD, Lawrence, IL
Built 1958 Load: 26.9 t ADT: 7,200
FAP-327WB (US-50)
PoorOver: TR-262
2.4 MI E AIRPORT INT, Lawrence, IL
Built 1957 Load: 27.5 t ADT: 7,200
CH 11
PoorOver: Trib to Raccoon Cree
6 MI SW Bridgeport, Lawrence, IL
Built 1934 Load: 27.5 t ADT: 35
FAP-332 (ILL-1)
PoorOver: STREAM
.25 MI N BIRDS RD, Lawrence, IL
Built 1921 Load: 28.5 t ADT: 3,600
CH-5
PoorOver: BIRCH CREEK
3.5 MI NW PINKSTAFF, Lawrence, IL
Built 1979 Load: 29.5 t ADT: 100
St. F Muni 7250
PoorOver: WABASH RIVER
ST. FRANCISVILLE, Lawrence, IL
Built 1906 Load: 30.5 t ADT: 500
TR-243
PoorOver: LITTLE BONPAS CREEK
0.25 MI W HELENA, Lawrence, IL
Built 1988 Load: 30.8 t ADT: 150
FAP-332 (ILL-1)
PoorOver: EMBARRAS RV OVERFLOW
.5 MI N US-50, Lawrence, IL
Built 1923 Load: 31.4 t ADT: 5,400
TR 258
PoorOver: DRAIN DITCH
4 MI NE BILLET, Lawrence, IL
Built 2002 Load: 31.4 t ADT: 150
FAP-332 (ILL-1)
PoorOver: EMBARRAS R OVERFLOW
1 MI N US-50, Lawrence, IL
Built 1964 Load: 32.7 t ADT: 5,400
TR 257
PoorOver: WABASH RIVER
ST. FRANCISVILLE, Lawrence, IL
Built 1906 Load: 33.4 t ADT: 500
TR 31
PoorOver: EAGLE BRANCH
3.5 MI ESE CHAUNCEY, Lawrence, IL
Built 2006 Load: 34.0 t ADT: 25
FAP-327EB (US-50)
PoorOver: ALLISON DITCH NO 1
2 MI E AIRPORT INT, Lawrence, IL
Built 1957 Load: 34.7 t ADT: 7,200
FAP-327WB (US-50)
PoorOver: ALLISON DITCH NO 1
2 MI E AIRPORT INT, Lawrence, IL
Built 1957 Load: 34.7 t ADT: 7,200
FAP-327EB (US-50)
PoorOver: FR-2004/ALLISON DT 3
.5 MI E LAKE LAW INT, Lawrence, IL
Built 1961 Load: 34.7 t ADT: 6,200
FAP-327WB (US-50)
PoorOver: FR-2004/ALLISON DT 3
.5 MI E LAKE LAW INT, Lawrence, IL
Built 1961 Load: 36.6 t ADT: 6,200
FAP-327EB (US 50)
PoorOver: BEAVER POND DITCH
3 MI E LAWRENCEVILLE, Lawrence, IL
Built 1957 Load: 36.9 t ADT: 7,200
FAP-327WB (US-50)
PoorOver: BEAVER POND DITCH
3 MI E LAWRENCEVILLE, Lawrence, IL
Built 1957 Load: 36.9 t ADT: 7,200
FAP-332 (ILL-1)
PoorOver: INDIAN CREEK
2 MI S LAWRENCEVILLE, Lawrence, IL
Built 1957 Load: 38.2 t ADT: 2,550
FAP-327EB (US-50)
PoorOver: FR-1747/ALLISON DT 2
.5 MI W LAKE LAW INT, Lawrence, IL
Built 1959 Load: 38.9 t ADT: 7,200
FAP-327WB (US-50)
PoorOver: FR-1747/ALLISON DT 2
.5 MI W LAKE LAW INT, Lawrence, IL
Built 1959 Load: 38.9 t ADT: 7,200
FAP-327/FR-1699
PoorOver: ALLISON DITCH NO 1
2 MI E AIRPORT INT, Lawrence, IL
Built 1957 Load: 38.9 t ADT: 20
FAS-801
PoorOver: SUGAR CREEK
4 MI E BIRDS, Lawrence, IL
Built 1930 Load: 41.1 t ADT: 375
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.