Total bridges
139
Public highway bridges in St. Helena County
County profile · official public datasets
St. Helena County, LA
139 public highway bridges tracked in the FHWA National Bridge Inventory: 33.1% rated Good, 58.3% Fair, 8.6% Poor.
- 139
- Public bridges
- 33.1%
- Good condition
- 8.6%
- Poor condition
The verdict
According to the Federal Highway Administration's 2024 National Bridge Inventory.
St. Helena County posts a better-than-median Poor-condition share among rated counties in the state across mid-size county bridge inventory.
- Top 41%
- lowest Poor share in state
- 8.6%
- Poor-condition share
- 139
- public highway bridges
- 1979
- 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.
St. Helena County Bridge Snapshot
According to the Federal Highway Administration's 2024 National Bridge Inventory, St. Helena County ranks #26 of 64 Louisiana counties with at least 5 public highway bridges on Poor-condition share (lower share ranks better; currently 8.6%). St. Helena County, Louisiana contains 139 public highway bridges. Roughly 33.1% are rated “Good,” 58.3% “Fair,” and 8.6% “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
33.1%
46 of 139 rated 7-9
Fair condition
58.3%
81 of 139 rated 5-6
Poor condition
8.6%
12 of 139 rated 4 or below
In-state Poor-share rank
#26 of 64
Among Louisiana counties with 5+ bridges, lower share ranks better
Condition distribution
Share of 139 NBI-tracked bridges by lowest applicable component rating.
Good 33.1% (46)
Fair 58.3% (81)
Poor 8.6% (12)
St. Helena County's Poor-condition bridges carry 12,642 vehicle crossings a day
That is 7.3% of the county's reported daily bridge traffic on 8.3% of its bridges: Poor-condition structures carry less traffic than their share of the inventory. Each Poor bridge averages 1,149 crossings a day against 720 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 133 of 139 bridges in this county that report an average daily traffic count. Source: FHWA National Bridge Inventory, 2024 release.
50.4% of St. Helena County's bridges have passed the 50-year mark
70 of the 139 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 33.1% 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 22.9% of the county's Poor-condition bridge traffic
LA0037 over CREEK, built 1960, carries 2,894 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 12-bridge count understates how much of the daily burden sits on a single crossing.
Share is of the 12,642 daily crossings on Poor-rated bridges that report a traffic count. Source: FHWA National Bridge Inventory, 2024 release.
When St. Helena County's bridges were built
139 bridges with a recorded construction year, grouped by decade
- 1940s 1
1940–1949
1 bridges
- 1950s
1950–1959
36 bridges
- 1960s
1960–1969
32 bridges
- 1970s 11
1970–1979
11 bridges
- 1980s 12
1980–1989
12 bridges
- 1990s
1990–1999
15 bridges
- 2000s 4
2000–2009
4 bridges
- 2010s
2010–2019
23 bridges
- 2020s 5
2020–2029
5 bridges
What this shows Construction peaked in the 1950s, when 36 of the county's bridges still in the inventory were built, which is 25.9% of those with a recorded year. That cohort is now 65 to 74 years old in the 2024 inventory. Its average build year (1979) matches the Louisiana average (1982).
How St. Helena County compares with Louisiana's closest counties by inventory size
The 5 Louisiana counties nearest St. Helena County in number of bridges, with their condition splits. Its 8.6% Poor share is the 2nd-lowest of these 6. Its average build year of 1979 against a peer-group mean of 1985 is 6 years older.
Showing the 5 closest of 63 Louisiana counties eligible for comparison.
| County | Bridges | Good | Fair | Poor | Avg. built |
|---|---|---|---|---|---|
| Avoyelles County | 147 | 47.6% | 33.3% | 19% | 1987 |
| Iberia County | 143 | 44.1% | 46.2% | 9.8% | 1985 |
| St. Helena County (this page) | 139 | 33.1% | 58.3% | 8.6% | 1979 |
| Morehouse County | 136 | 33.8% | 52.9% | 13.2% | 1983 |
| East Feliciana County | 133 | 32.3% | 42.1% | 25.6% | 1980 |
| Franklin County | 131 | 64.9% | 32.1% | 3.1% | 1989 |
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 St. Helena 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 St. Helena County, both outside Louisiana so the neighborhoods are not the same-state size table above.
Similar inventory size
Nearest county inventories outside LA (139 bridges here).
- Bulloch County, GA · 139 bridges
- Garrett County, MD · 139 bridges
- Midland County, MI · 139 bridges
- Leflore County, MS · 139 bridges
Similar average build year
Nearest mean year-built outside LA (1979 here).
- Pima County, AZ · avg 1979 · 1,150 bridges
- Jefferson County, KY · avg 1979 · 662 bridges
- Spartanburg County, SC · avg 1979 · 638 bridges
- McPherson County, KS · avg 1979 · 586 bridges
Source: FHWA National Bridge Inventory, 2024 release. Peers floor at 10 bridges so stub inventories cannot own the match.
All bridges (139)
Travis Rd
GoodOver: TAYLOR CREEK
1.0 MILES WEST OF ETHEL L, St. Helena, LA
Built 2010 Load: 36.9 t ADT: 125
Rohner Rd
GoodOver: TWELVE MILE CREEK
1.8 MI W JCT LA 43 & 1045, St. Helena, LA
Built 1985 Load: 37.6 t ADT: 350
St Helena Chrch Rd
GoodOver: CREEK
2 MILES EAST OF LA. 1044, St. Helena, LA
Built 2013 Load: 37.9 t ADT: 50
Shiloh Baptist Rd
GoodOver: EAST HOG BRANCH
3.6 MILES WEST OF LA 43, St. Helena, LA
Built 2010 Load: 37.9 t ADT: 50
Lindsey Rd
GoodOver: JOSEPH BRANCH
0.6 MI. NORTH OF LA 10, St. Helena, LA
Built 2012 Load: 39.9 t ADT: 300
LA0038
GoodOver: DRAIN
0.63OF A MILE EAST OF LA, St. Helena, LA
Built 2013 Load: 40.5 t ADT: 1,715
LA0016
GoodOver: DRAIN
2.6 MI WEST OF JCT 449, St. Helena, LA
Built 1997 Load: 41.1 t ADT: 4,844
David Allen Rd
GoodOver: DARLING CREEK
3.10 MI NORTH OF LA.38 ON, St. Helena, LA
Built 2015 Load: 42.1 t
LA0038
GoodOver: RIVER
0.8 M E OF LA 43, St. Helena, LA
Built 2013 Load: 43.4 t ADT: 1,715
LA0038
GoodOver: DRAIN
0.51 OF A MILE EAST OF LA, St. Helena, LA
Built 2013 Load: 43.4 t ADT: 1,715
Leonard Chapel Rd
GoodOver: Branch
1.88 Mi S of LA16, St. Helena, LA
Built 2019 Load: 44.4 t ADT: 500
Pumping Station Rd
GoodOver: Branch
1.55 Mi. S. of LA 10, St. Helena, LA
Built 2020 Load: 44.4 t ADT: 500
Sandy Run Rd
GoodOver: Sandy Run Trib.
0.5 Mi. W. of LA 1043, St. Helena, LA
Built 2020 Load: 44.4 t ADT: 450
LA0063
GoodOver: Pigeon Creek
1.9 Mi. N. of LA 16, St. Helena, LA
Built 2019 Load: 45.4 t ADT: 1,999
LEONARD CHAPEL RD
GoodOver: CREEK
.77 MI N. OF LA 40, St. Helena, LA
Built 2019 Load: 46.0 t ADT: 500
Williams Rd
GoodOver: Coffman Creek
0.2 Mi S of LA 16, St. Helena, LA
Built 2019 Load: 46.0 t ADT: 500
LA1042
GoodOver: Twelve Mile Creek
2.5 Mi W of La 37, St. Helena, LA
Built 2020 Load: 46.3 t ADT: 1,316
Willie Redden Rd
GoodOver: BLACK CREEK
2.6 MILES SOUTH OF LA 10, St. Helena, LA
Built 2014 Load: 48.0 t
Sibley Rd
GoodOver: BRANCH
1.3 MILES SOUTH OF LA 16, St. Helena, LA
Built 2014 Load: 48.0 t
Hornsby Rd
GoodOver: CREEK
1 MILE NORTH OF LA. 16, St. Helena, LA
Built 2014 Load: 48.0 t
Carrier Rd
GoodOver: DUTCHMAN CREEK
ON CARRIER ROAD 0.35 MILE, St. Helena, LA
Built 2014 Load: 48.0 t
Needham Rd
GoodOver: CREEK
3 TENTHS OF A MILE NORTH, St. Helena, LA
Built 2013 Load: 48.6 t ADT: 250
LA0010
GoodOver: Beaver Branch
1.70 Mi. East of LA 37, St. Helena, LA
Built 2017 Load: 51.2 t ADT: 1,514
LA0432
GoodOver: TURKEY CREEK
2.2 MI NW OF LA 38, St. Helena, LA
Built 2021 Load: 56.4 t ADT: 532
R.O. Stewart
GoodOver: Joiner Creek
0.65 Mi. S. of LA 38, St. Helena, LA
Built 2018 Load: 74.5 t ADT: 133
Charlie Overton rd
GoodOver: Spring Creek
2.5 Mi. south of LA 1042, St. Helena, LA
Built 2018 Load: 74.5 t ADT: 285
Sharkey Rd
GoodOver: SPILLER BRANCH PIPE
0.5 NI N OF LA 1045, St. Helena, LA
Built 1998 Load: 74.5 t ADT: 120
LA0010-S
PoorOver: ST JOSEPH BRANCH
1 mile east of LA 43, St. Helena, LA
Built 1959 Load: 2.3 t ADT: 225
Bobby Morgan Rd
PoorOver: TWELVE MILE CREEK
1.3 MI.W.OF D.E., St. Helena, LA
Built 1958 Load: 7.3 t ADT: 60
LA0037
PoorOver: GLASS BRANCH
1.6 M SW OF LA 10, St. Helena, LA
Built 1958 Load: 12.0 t ADT: 1,781
LA0038
PoorOver: PETERS CREEK
1.0 M E OF LA 441, St. Helena, LA
Built 1952 Load: 12.5 t ADT: 1,535
McLIN Rd
PoorOver: DUTCHMAN CREEK
1.4MI FROM LA 449, St. Helena, LA
Built 1964 Load: 12.5 t ADT: 70
LA0038
PoorOver: DARLING CREEK
0.5 Mi E of LA 432, St. Helena, LA
Built 1954 Load: 13.6 t ADT: 933
LA0037
PoorOver: CREEK
0.2 M SW OF LA 10, St. Helena, LA
Built 1960 Load: 14.6 t ADT: 2,894
LA0037
PoorOver: GLASS BRANCH
1.5 miles south of LA 10, St. Helena, LA
Built 1960 Load: 16.2 t ADT: 1,781
LA0037
PoorOver: CREEK
2.6 M SW OF LA 10, St. Helena, LA
Built 1958 Load: 16.3 t ADT: 1,730
LA0038
PoorOver: DRAIN
0.6 M E OF LA 432, St. Helena, LA
Built 1954 Load: 17.1 t ADT: 933
Sawmill Rd
PoorOver: CREEK
0.4MI.S.OF LA.16, St. Helena, LA
Built 1964 Load: 18.1 t ADT: 700
Charlie Overton Rd
PoorOver: CHOCTAW CREEK
3.8MI.E OF 349, St. Helena, LA
Built 1966 Load: 33.4 t
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.