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.

Total bridges

203

Public highway bridges in Marengo County

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

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.

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

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.

Bridge inventory size and condition shares for Marengo County and the 5 Alabama counties closest to it in inventory size
County Bridges Poor
Dale County 206 0%
Geneva County 205 3.4%
Russell County 205 2.9%
Greene County 204 2.9%
Marengo County (this page) 203 5.9%
Elmore County 202 3%

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).

Similar average build year

Nearest mean year-built outside AL (1984 here).

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

All 203 Good 124 Fair 67 Poor 12

Good-condition bridges (124)

CO RT.NO 12

Good

Over: LITTLE DRY CREEK

1 3 MI E CO RT 51, Marengo, AL

Built 1992 Load: 39.4 t ADT: 400

US 80

Good

Over: A.G.R.

0.8 MI. E. OF DEMOPOLIS, Marengo, AL

Built 1984 Load: 39.6 t ADT: 4,650

COUNTY ROUTE 17

Good

Over: LITTLE BEAVER CREEK

0.01 MI.S AL 69, Marengo, AL

Built 2000 Load: 39.8 t ADT: 140

CO RT NO 79

Good

Over: CHICKASAW BOGUE

1.15 MI CO RT 53, Marengo, AL

Built 1989 Load: 40.6 t ADT: 400

COUNTY RT 57

Good

Over: RELIEF DRAINAGE DITCH

2.4 MI.N. JEFFERSON, Marengo, AL

Built 1993 Load: 40.6 t ADT: 450

US 80

Good

Over: A.G.R

0.8 MI. E. OF DEMOPOLIS, Marengo, AL

Built 1984 Load: 40.7 t ADT: 4,650

CO. RT. 30

Good

Over: GOOSE CREEK

2.20 MI. E. AL.25, Marengo, AL

Built 1993 Load: 40.7 t ADT: 290

COUNTY RT 44

Good

Over: TUCKER CREEK

0.90 MI W US 43, Marengo, AL

Built 1992 Load: 41.2 t ADT: 380

COUNTY ROAD 53

Good

Over: POPLAR CREEK

1.3 MI NORTH OF AL 28, Marengo, AL

Built 2005 Load: 41.8 t ADT: 258

000000646208Z0

Good

Over: TRIB TO MUD CREEK

4.4 MI N CLARKE CO LN, Marengo, AL

Built 1995 Load: 42.3 t ADT: 180

US 43

Good

Over: CHICKASAW BOGUE CR REL

0.5 MI. N OF LINDEN, Marengo, AL

Built 2004 Load: 42.3 t ADT: 6,130

SR 28

Good

Over: CHICKASAW BOGUE CREEK

EAST OF THOMASTON, Marengo, AL

Built 2012 Load: 43.3 t ADT: 1,010

SR 28

Good

Over: CHICKASAW BOGUE CRK REL

EAST OF THOMASTON, Marengo, AL

Built 2012 Load: 43.4 t ADT: 1,010

SR 69

Good

Over: SOUTH DOUBLE CREEK

2.7 MI. N. OF NANAFALIA, Marengo, AL

Built 1993 Load: 43.6 t ADT: 1,220

SR 69

Good

Over: NORTH DOUBLE CREEK

2.9 MI. N. OF NANAFALIA, Marengo, AL

Built 1993 Load: 44.0 t ADT: 1,220

CO RT NO 45

Good

Over: TURKEY CREEK

0.25 MI S CO RT 30, Marengo, AL

Built 1989 Load: 44.5 t ADT: 400

COUNTY ROAD 55

Good

Over: TURKEY CREEK

3 MILES EAST OF AL 25, Marengo, AL

Built 2006 Load: 44.5 t ADT: 370

0000002146125X0

Good

Over: BRANCH OF BASHI CREEK

4.15MI N CLARK CO LINE, Marengo, AL

Built 1996 Load: 44.7 t ADT: 399

COUNTY ROAD 44

Good

Over: TRIB OF LITTLE DRY DREEK

1.0 MILES WEST OF DAYTON, Marengo, AL

Built 2003 Load: 45.2 t ADT: 460

COUNTY ROAD 44

Good

Over: POWELL CREEK

1.6 MI EAST OF U.S. 43, Marengo, AL

Built 2004 Load: 45.3 t ADT: 590

JACKSON STREET

Good

Over: TOMBIGBEE BACKWATER

DEMOPOLIS, Marengo, AL

Built 2020 Load: 45.4 t ADT: 2,622

SR 69

Good

Over: SAM'S CREEK

4.1 MI. N. OF LINDEN, Marengo, AL

Built 2000 Load: 45.6 t ADT: 1,450

SR-8 (US-80)

Good

Over: Cottonwood Creek (Rel)

1.6 ml. east Faunsdale, Marengo, AL

Built 2022 Load: 45.7 t ADT: 5,520

SR 10

Good

Over: BRANCH

.9 MI. W. OF SWEETWATER, Marengo, AL

Built 1984 Load: 46.3 t ADT: 2,990

COUNTY ROAD 44

Good

Over: LITTLE DRY CREEK

0.8 MILES W OF DAYTON, Marengo, AL

Built 2003 Load: 47.4 t ADT: 460

US 80

Good

Over: FRENCH CREEK

2.1 MI EAST OF DEMOPOLIS, Marengo, AL

Built 2001 Load: 47.4 t ADT: 4,650

000005446223Z0

Good

Over: BRANCH OF POWELL CREEK

1.30MI E AL 69, Marengo, AL

Built 1997 Load: 48.0 t ADT: 340

000005446225Z0

Good

Over: BRANCH OF POWELL CREEK

1.65MI E AL 69, Marengo, AL

Built 1997 Load: 48.2 t ADT: 340

SR 69

Good

Over: ROCKY BRANCH

7.5 MI. N. OF LINDEN, Marengo, AL

Built 2007 Load: 48.5 t ADT: 1,450

SR 10

Good

Over: BRANCH

3.6 MI. W. OF SWEETWATER, Marengo, AL

Built 1984 Load: 48.8 t ADT: 2,990

000000646207Z0

Good

Over: TRIB TO MUD CREEK

0.1 MI E OF US 43, Marengo, AL

Built 1995 Load: 49.0 t ADT: 270

COUNTY ROAD 53

Good

Over: TRIB. OF POPLAR CREEK

1.3 MI NORTH OF AL 28, Marengo, AL

Built 2005 Load: 49.4 t ADT: 258

CR 33

Good

Over: SANDY BRANCH

8.9 MI NE US 43, Marengo, AL

Built 2009 Load: 49.4 t ADT: 160

SR 25

Good

Over: LITTLE CREEK

0.3 MI. N. OF VINELAND, Marengo, AL

Built 1988 Load: 51.6 t ADT: 2,080

SR 69

Good

Over: 6 MILE CREEK

4.5 MI. S. OF LINDEN, Marengo, AL

Built 1993 Load: 51.9 t ADT: 2,210

SR 10

Good

Over: BRANCH

2.6 MI. E. OF NANAFALIA, Marengo, AL

Built 1984 Load: 53.6 t ADT: 2,650

SR-8 (US-80)

Good

Over: Cottonwood Creek (MC)

?????????????????????????, Marengo, AL

Built 2022 Load: 54.1 t ADT: 5,520

CO RT NO 6

Good

Over: BRANCH OF HODGENS CREEK

2.3 MI W OF EXMOOR, Marengo, AL

Built 1988 Load: 54.4 t ADT: 150

SR 10

Good

Over: MILL CREEK

.9 MI. E. OF DIXONS MILL, Marengo, AL

Built 1988 Load: 54.6 t ADT: 1,850

SR 69

Good

Over: SYCAMORE CREEK

.5 MI. S. OF LINDEN, Marengo, AL

Built 1993 Load: 54.6 t ADT: 1,960

COUNTY RT. 30

Good

Over: JAMES CREEK

0.5 M E AL 25, Marengo, AL

Built 1999 Load: 54.6 t ADT: 310

COUNTY ROAD 19

Good

Over: BARTON CREEK

1.5 MI NORTH OF AL. 28, Marengo, AL

Built 2004 Load: 55.6 t ADT: 1,055

COUNTY RT 19

Good

Over: DOUBLE CREEK

6.95 MI N AL 28, Marengo, AL

Built 1989 Load: 56.2 t ADT: 580

COUNTY RT.30

Good

Over: BRANCH OF TURKEY CREEK

5.35 MI E. U.S. 43, Marengo, AL

Built 1993 Load: 58.9 t ADT: 190

CO RT NO 16

Good

Over: BRANCH SWEETWATER CREEK

1.1 MI E SWEETWATER, Marengo, AL

Built 1992 Load: 59.8 t ADT: 620

0000002146102X0

Good

Over: BRANCH OF BASHI CREEK

5.2MI N CLARK CO LINE, Marengo, AL

Built 1996 Load: 61.3 t ADT: 399

CO RT NO 16

Good

Over: BRANCH SWEETWATER CREEK

1.1 MI E SWEETWATER, Marengo, AL

Built 1992 Load: 62.0 t ADT: 620

SR 10

Good

Over: BRANCH

4.4 MI. E. OF NANAFALIA, Marengo, AL

Built 1984 Load: 62.1 t ADT: 2,990

SR 10

Good

Over: HODGENS CREEK REL.

2.6 MI. W. OF SWEETWATER, Marengo, AL

Built 1984 Load: 63.3 t ADT: 2,990

SR 10

Good

Over: HODGEN CREEK

2.5 MI. W. OF SWEETWATER, Marengo, AL

Built 1984 Load: 64.1 t ADT: 2,990

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.