Total bridges
203
Public highway bridges in Marengo County
County profile · official public datasets
Marengo County, AL
203 public highway bridges tracked in the FHWA National Bridge Inventory: 61.1% rated Good, 33% Fair, 5.9% Poor.
- 203
- Public bridges
- 61.1%
- Good condition
- 5.9%
- Poor condition
The verdict
According to the Federal Highway Administration's 2024 National Bridge Inventory.
Marengo County pairs a higher-than-median Poor-condition share among rated counties in the state with a newer average build year than the state inventory.
- 53rd
- of 67 on Poor share
- 5.9%
- Poor-condition share
- 203
- public highway bridges
- 1984
- 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.
Marengo County Bridge Snapshot
According to the Federal Highway Administration's 2024 National Bridge Inventory, Marengo County ranks #53 of 67 Alabama counties with at least 5 public highway bridges on Poor-condition share (lower share ranks better; currently 5.9%). Marengo County, Alabama contains 203 public highway bridges. Roughly 61.1% are rated “Good,” 33% “Fair,” and 5.9% “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
61.1%
124 of 203 rated 7-9
Fair condition
33%
67 of 203 rated 5-6
Poor condition
5.9%
12 of 203 rated 4 or below
In-state Poor-share rank
#53 of 67
Among Alabama counties with 5+ bridges, lower share ranks better
Condition distribution
Share of 203 NBI-tracked bridges by lowest applicable component rating.
Good 61.1% (124)
Fair 33% (67)
Poor 5.9% (12)
Marengo County's Poor-condition bridges carry 1,025 vehicle crossings a day
That is 0.3% of the county's reported daily bridge traffic on 5.9% of its bridges: Poor-condition structures carry less traffic than their share of the inventory. Each Poor bridge averages 85 crossings a day against 1,511 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 203 of 203 bridges in this county that report an average daily traffic count. Source: FHWA National Bridge Inventory, 2024 release.
23.2% of Marengo County's bridges have passed the 50-year mark
47 of the 203 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 61.1% 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 39% of the county's Poor-condition bridge traffic
SHILOH STREET over SPRINGFIELD CREEK, built 1978, carries 400 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 1,025 daily crossings on Poor-rated bridges that report a traffic count. Source: FHWA National Bridge Inventory, 2024 release.
When Marengo County's bridges were built
203 bridges with a recorded construction year, grouped by decade
- 1920s 3
1920–1929
3 bridges
- 1930s 5
1930–1939
5 bridges
- 1940s 9
1940–1949
9 bridges
- 1950s 17
1950–1959
17 bridges
- 1960s 12
1960–1969
12 bridges
- 1970s 5
1970–1979
5 bridges
- 1980s
1980–1989
62 bridges
- 1990s
1990–1999
51 bridges
- 2000s
2000–2009
29 bridges
- 2010s 4
2010–2019
4 bridges
- 2020s 6
2020–2029
6 bridges
What this shows Construction peaked in the 1980s, when 62 of the county's bridges still in the inventory were built, which is 30.5% of those with a recorded year. That cohort is now 35 to 44 years old in the 2024 inventory. Its average build year is 1984, 10 years newer than the Alabama average of 1974.
How Marengo County compares with Alabama's closest counties by inventory size
The 5 Alabama counties nearest Marengo County in number of bridges, with their condition splits. Its 5.9% Poor share is the 6th-lowest of these 6. Its average build year of 1984 against a peer-group mean of 1975 is 9 years newer.
Showing the 5 closest of 66 Alabama counties eligible for comparison.
| County | Bridges | Good | Fair | Poor | Avg. built |
|---|---|---|---|---|---|
| Dale County | 206 | 42.7% | 57.3% | 0% | 1973 |
| Geneva County | 205 | 34.6% | 62% | 3.4% | 1976 |
| Russell County | 205 | 34.6% | 62.4% | 2.9% | 1974 |
| Greene County | 204 | 45.1% | 52% | 2.9% | 1973 |
| Marengo County (this page) | 203 | 61.1% | 33% | 5.9% | 1984 |
| Elmore County | 202 | 29.2% | 67.8% | 3% | 1980 |
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 Marengo 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 Marengo County, both outside Alabama so the neighborhoods are not the same-state size table above.
Similar inventory size
Nearest county inventories outside AL (203 bridges here).
- Monongalia County, WV · 203 bridges
- Flathead County, MT · 204 bridges
- Pembina County, ND · 204 bridges
- Okfuskee County, OK · 204 bridges
Similar average build year
Nearest mean year-built outside AL (1984 here).
- Hennepin County, MN · avg 1984 · 936 bridges
- Duval County, FL · avg 1984 · 831 bridges
- El Paso County, CO · avg 1984 · 686 bridges
- Bell County, TX · avg 1984 · 660 bridges
Source: FHWA National Bridge Inventory, 2024 release. Peers floor at 10 bridges so stub inventories cannot own the match.
All bridges (203)
SR 69
FairOver: BRANCH
5.5 MI. N. OF LINDEN, Marengo, AL
Built 1937 Load: 48.7 t ADT: 1,450
SR 25
FairOver: CREEK
8.4 MI. N. OF VINELAND, Marengo, AL
Built 1988 Load: 48.9 t ADT: 1,090
US 43
FairOver: BRANCH
DIXONS MILLS, Marengo, AL
Built 1947 Load: 50.5 t ADT: 4,060
SR 28
FairOver: BRANCH
6MI.E.OF LINDEN, Marengo, AL
Built 1988 Load: 51.3 t ADT: 1,710
US 43
FairOver: SWEETWATER CREEK
3.2 MI. N. OF DIXONS MILL, Marengo, AL
Built 1929 Load: 52.2 t ADT: 3,310
US 43
FairOver: BRANCH
2.8 MI. S. OF DIXONMILL, Marengo, AL
Built 1947 Load: 63.0 t ADT: 4,060
US 43
FairOver: TWO MILE BRANCH
1 MI. S. OF LINDEN, Marengo, AL
Built 1942 Load: 68.5 t ADT: 3,600
SR 69
FairOver: SWEETWATER CREEK
9.3 MI. N. OF MORUIN, Marengo, AL
Built 1955 Load: 70.5 t ADT: 530
SR 10
FairOver: CREEK
3.9MI.E.OF DIXONS MILL, Marengo, AL
Built 1988 Load: 83.5 t ADT: 1,850
SR 28
FairOver: ATKINS CREEK RELIEF
4.0MI.E.OF LINDEN, Marengo, AL
Built 1927 Load: 88.9 t ADT: 1,710
US 43
FairOver: LITTLE BEAVER CREEK
7 MI. S. OF LINDEN, Marengo, AL
Built 1942 Load: 88.9 t ADT: 2,350
US 80
FairOver: BRANCH
1.2 MI. E. OF DEMOPOLIS, Marengo, AL
Built 1983 Load: 88.9 t ADT: 9,300
SR 10
FairOver: BRANCH
2.2 MI. W. OF DIXONS MILL, Marengo, AL
Built 1984 Load: 88.9 t ADT: 2,990
SR 10
FairOver: BRANCH
0.4 MI. W. OF DIXONS MILL, Marengo, AL
Built 1984 Load: 88.9 t ADT: 4,680
CO RT NO 6
FairOver: BRANCH OF MILL CREEK
1.1 MI E OF EXMOOR, Marengo, AL
Built 1985 Load: 88.9 t ADT: 150
0000007646220Z0
FairOver: WHITFIELD CANAL
0.20 MI N U.S. 43, Marengo, AL
Built 1995 Load: 88.9 t ADT: 490
0000002946255Z0
FairOver: SWEETWATER CRK BNCH
1.10 MI NE AL 10, Marengo, AL
Built 1995 Load: 88.9 t ADT: 150
US 43
GoodOver: SPRINGFIELD CREEK
LINDEN, Marengo, AL
Built 2008 Load: 20.7 t ADT: 5,900
SR 25
GoodOver: MICHIGAN CREEK REL.
1.7 MI. S. OF THOMASTON, Marengo, AL
Built 1988 Load: 21.9 t ADT: 1,190
US 43
GoodOver: WARRIOR RIVER
1.5MI. N. OF DEMOPOLIS, Marengo, AL
Built 1988 Load: 22.6 t ADT: 4,640
COUNTY ROAD 55
GoodOver: BAPTIZING CREEK
2 MI. EAST OF AL 25, Marengo, AL
Built 2006 Load: 25.5 t ADT: 256
SR 25
GoodOver: SANDY BRANCH
1.7 MI. N. OF THOMASTON, Marengo, AL
Built 1987 Load: 26.2 t ADT: 1,630
SR 69
GoodOver: HORSE CREEK
5.1 MI.N. OF MORVIN, Marengo, AL
Built 1994 Load: 26.2 t ADT: 530
SR 25
GoodOver: DRY CREEK
1.1 MI. S. OF VINELAND, Marengo, AL
Built 1991 Load: 26.3 t ADT: 1,340
SR 25
GoodOver: MICHIGAN CREEK
3.5 MI. S. OF THOMASTON, Marengo, AL
Built 1988 Load: 26.6 t ADT: 1,110
SR 10
GoodOver: BRANCH
2.6 MI. W. OF DIXONS MILL, Marengo, AL
Built 1984 Load: 27.2 t ADT: 2,990
US 80
GoodOver: FRENCH CREEK
2.1 MI. E. OF DEMOPOLIS, Marengo, AL
Built 1984 Load: 27.7 t ADT: 4,650
COUNTY RT. 07
GoodOver: SWEETWATER CREEK
7.25 MI. N CLARK CO. LINE, Marengo, AL
Built 1998 Load: 27.9 t ADT: 810
US 43
GoodOver: RELIEF
.1MI. N OF DEMOPOLIS, Marengo, AL
Built 1988 Load: 28.1 t ADT: 4,640
COUNTY RT 19
GoodOver: BRANCH OF DOUBLE CREEK
06.65 MI N AL 28, Marengo, AL
Built 1960 Load: 28.2 t ADT: 500
SR 10
GoodOver: SWEETWATER CREEK
SWEETWATER, Marengo, AL
Built 1984 Load: 29.0 t ADT: 2,990
SR 25
GoodOver: SANDY BRANCH
1.6 MI. N. OF THOMASTON, Marengo, AL
Built 1987 Load: 29.9 t ADT: 1,630
SR 28
GoodOver: CHICKASAW BOGUE REL.
2.3 MI. W. OF LINDEN, Marengo, AL
Built 1992 Load: 30.3 t ADT: 1,870
US 43
GoodOver: NORFOLK SOUTHERN
DEMOPOLIS, Marengo, AL
Built 1985 Load: 30.6 t ADT: 3,740
SR 25
GoodOver: DRY CREEK REL.
3.9 MI. N. OF THOMASTON, Marengo, AL
Built 1987 Load: 30.8 t ADT: 1,110
SR 25
GoodOver: DRY CREEK REL.
1.3 MI. S. OF VINELAND, Marengo, AL
Built 1991 Load: 30.8 t ADT: 1,340
SR 28
GoodOver: CHICKASAW BOGUE REL.
3.0 MI. W. OF LINDEN, Marengo, AL
Built 1992 Load: 30.8 t ADT: 1,870
SR 28
GoodOver: CHICKASAW BOGUE REL.
2.9 MI. W. OF LINDEN, Marengo, AL
Built 1992 Load: 30.8 t ADT: 1,870
SR 28
GoodOver: CHICKASAW BOGUE REL.
2.1 MI. W. OF LINDEN, Marengo, AL
Built 1992 Load: 30.8 t ADT: 1,870
SR 69
GoodOver: POWELLS CREEK
8.8 mi. North of Linden, Marengo, AL
Built 2000 Load: 31.2 t ADT: 1,450
0000002146103X0
GoodOver: BRANCH OF DEEP CREEK
5.5MI N CLARK CO LINE, Marengo, AL
Built 1996 Load: 31.3 t ADT: 399
SR 25
GoodOver: BAPTIZING CREEK
1.5 MI. N. OF VINELAND, Marengo, AL
Built 1988 Load: 31.8 t ADT: 2,080
CO RD 572
GoodOver: BRANCH AT TURKEY PEN CR
1.8 MI WEST OF CO RD 65, Marengo, AL
Built 2001 Load: 31.9 t ADT: 36
SR 28
GoodOver: CHICKASAW BOGUE CREEK
2.6 MILES W.OF LINDEN, Marengo, AL
Built 2006 Load: 31.9 t ADT: 1,870
SR 69
GoodOver: 3 MILE CREEK
2.1 MILES S. OF LINDEN, Marengo, AL
Built 1993 Load: 32.3 t ADT: 1,960
US 80
GoodOver: NORFOLK SOUTHERN
3.2 MI. E. OF DEMOPOLIS, Marengo, AL
Built 1984 Load: 32.6 t ADT: 4,410
SR 69
GoodOver: BEAVER CREEK
9.4 MI. N. NANAFALIA, Marengo, AL
Built 1994 Load: 32.8 t ADT: 1,480
COUNTY ROAD 572
GoodOver: SAND CREEK
0.5 MI WEST OF CO RD 65, Marengo, AL
Built 2001 Load: 32.9 t ADT: 84
CO. RT. 57
GoodOver: DOUBLE CREEK
5.58 MI. N. JEFFERSON, Marengo, AL
Built 2003 Load: 33.0 t ADT: 530
CO. RT. 57
GoodOver: DOUBLE CREEK
6.1 MI N. OF JEFFERSON, Marengo, AL
Built 2003 Load: 33.0 t ADT: 530
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.