Total bridges
612
Public highway bridges in Mobile County
County profile · official public datasets
Mobile County, AL
612 public highway bridges tracked in the FHWA National Bridge Inventory: 21.1% rated Good, 76.1% Fair, 2.8% Poor.
- 612
- Public bridges
- 21.1%
- Good condition
- 2.8%
- Poor condition
The verdict
According to the Federal Highway Administration's 2024 National Bridge Inventory.
Mobile County pairs a better-than-median Poor-condition share among rated counties in the state with a newer average build year than the state inventory.
- Top 46%
- lowest Poor share in state
- 2.8%
- Poor-condition share
- 612
- public highway bridges
- 1980
- 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.
Mobile County Bridge Snapshot
According to the Federal Highway Administration's 2024 National Bridge Inventory, Mobile County ranks #31 of 67 Alabama counties with at least 5 public highway bridges on Poor-condition share (lower share ranks better; currently 2.8%). Mobile County, Alabama contains 612 public highway bridges. Roughly 21.1% are rated “Good,” 76.1% “Fair,” and 2.8% “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
21.1%
129 of 612 rated 7-9
Fair condition
76.1%
466 of 612 rated 5-6
Poor condition
2.8%
17 of 612 rated 4 or below
In-state Poor-share rank
#31 of 67
Among Alabama counties with 5+ bridges, lower share ranks better
Condition distribution
Share of 612 NBI-tracked bridges by lowest applicable component rating.
Good 21.1% (129)
Fair 76.1% (466)
Poor 2.8% (17)
Mobile County's Poor-condition bridges carry 66,988 vehicle crossings a day
That is 0.9% of the county's reported daily bridge traffic on 2.8% of its bridges: Poor-condition structures carry less traffic than their share of the inventory. Each Poor bridge averages 3,940 crossings a day against 6,342 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 603 of 612 bridges in this county that report an average daily traffic count. Source: FHWA National Bridge Inventory, 2024 release.
42.5% of Mobile County's bridges have passed the 50-year mark
260 of the 612 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 21.1% 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 28.9% of the county's Poor-condition bridge traffic
MCGREGOR AVE over ESLAVA CREEK, built 1964, carries 19,384 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 17-bridge count understates how much of the daily burden sits on a single crossing.
Share is of the 66,988 daily crossings on Poor-rated bridges that report a traffic count. Source: FHWA National Bridge Inventory, 2024 release.
When Mobile County's bridges were built
612 bridges with a recorded construction year, grouped by decade
- 1920s 7
1920–1929
7 bridges
- 1930s 17
1930–1939
17 bridges
- 1940s 14
1940–1949
14 bridges
- 1950s 49
1950–1959
49 bridges
- 1960s
1960–1969
128 bridges
- 1970s
1970–1979
89 bridges
- 1980s
1980–1989
74 bridges
- 1990s
1990–1999
110 bridges
- 2000s
2000–2009
75 bridges
- 2010s 30
2010–2019
30 bridges
- 2020s 19
2020–2029
19 bridges
What this shows Construction peaked in the 1960s, when 128 of the county's bridges still in the inventory were built, which is 20.9% of those with a recorded year. That cohort is now 55 to 64 years old in the 2024 inventory. Its average build year is 1980, 6 years newer than the Alabama average of 1974.
How Mobile County compares with Alabama's closest counties by inventory size
The 5 Alabama counties nearest Mobile County in number of bridges, with their condition splits. Its 2.8% Poor share is the 5th-lowest of these 6. Its average build year of 1980 against a peer-group mean of 1978 is in line with the group.
Showing the 5 closest of 66 Alabama counties eligible for comparison.
| County | Bridges | Good | Fair | Poor | Avg. built |
|---|---|---|---|---|---|
| Madison County | 710 | 41.8% | 56.9% | 1.3% | 1972 |
| Mobile County (this page) | 612 | 21.1% | 76.1% | 2.8% | 1980 |
| Montgomery County | 596 | 37.9% | 59.9% | 2.2% | 1975 |
| Tuscaloosa County | 482 | 44.6% | 54.8% | 0.6% | 1981 |
| Calhoun County | 386 | 32.9% | 63.2% | 3.9% | 1969 |
| Baldwin County | 381 | 48.3% | 50.4% | 1.3% | 1991 |
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 Mobile 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 Mobile County, both outside Alabama so the neighborhoods are not the same-state size table above.
Similar inventory size
Nearest county inventories outside AL (612 bridges here).
- Allen County, IN · 613 bridges
- Weld County, CO · 614 bridges
- Palm Beach County, FL · 610 bridges
- Monroe County, NY · 615 bridges
Similar average build year
Nearest mean year-built outside AL (1980 here).
- Tulsa County, OK · avg 1980 · 1,135 bridges
- Miami-Dade County, FL · avg 1980 · 1,057 bridges
- Pulaski County, AR · avg 1980 · 721 bridges
- McLennan County, TX · avg 1980 · 714 bridges
Source: FHWA National Bridge Inventory, 2024 release. Peers floor at 10 bridges so stub inventories cannot own the match.
Fair-condition bridges (466)
I-65 ON RAMP
FairOver: SR 158/213
I-65 @ SR 158/213, Mobile, AL
Built 2001 Load: 44.1 t ADT: 6,492
BELLINGRATH RD
FairOver: MUDDY CREEK
0.9 MI S US 90, Mobile, AL
Built 1992 Load: 44.5 t ADT: 8,996
US 43
FairOver: LIL BEAVER DAM BRANCH
1.7 MI N JCT CO RD 96, Mobile, AL
Built 1930 Load: 44.5 t ADT: 13,903
I-10
FairOver: REEDY BRANCH
1.6 MI E MISS ST LINE, Mobile, AL
Built 1964 Load: 44.5 t ADT: 48,605
EVANS ROAD
FairOver: REEDBREAK CREEK
2.05 MI W US 45, Mobile, AL
Built 1991 Load: 44.5 t ADT: 89
HALF MILE ROAD
FairOver: MIDDLE FORK FOWL RIVER
0.7 MI W OF CO ROAD 59, Mobile, AL
Built 1999 Load: 44.5 t ADT: 3,427
YEEND STREET
FairOver: SOUTHERN DRAIN CANAL
0.4M EAST I-10, Mobile, AL
Built 2002 Load: 44.5 t ADT: 2,455
SHELL BELT RD W
FairOver: UNAMED STREAM
2MI SW AL 188, Mobile, AL
Built 2010 Load: 44.5 t ADT: 941
NAVCO ROAD
FairOver: BOLTON BRANCH
100 SOUTH OF MCVAY DRIVE, Mobile, AL
Built 2008 Load: 44.8 t ADT: 7,844
MAUDELAYNE DR.S.
FairOver: SPRING BRANCH
700 W DEMOTROPOLISRD, Mobile, AL
Built 1960 Load: 45.0 t ADT: 2,412
US 45
FairOver: HURRICANE BRANCH
0.6 MI S CO RD 63, Mobile, AL
Built 1931 Load: 45.2 t ADT: 8,777
BELLINGRATH RD
FairOver: FOWL RIVER
0.5 MI. S. FOWL RIVER RD., Mobile, AL
Built 1987 Load: 45.2 t ADT: 2,771
MUSEUM DRIVE
FairOver: TWELVE-MILE CREEK
500 EAST OF GALLIARD DR, Mobile, AL
Built 2008 Load: 45.3 t ADT: 3,878
AIRPORT BLVD
FairOver: MILKHOUSE CREEK
0.7 MI W CODY RD, Mobile, AL
Built 1961 Load: 45.4 t ADT: 31,774
HERRON BAY RD SOUT
FairOver: HERRON BAYOU
0.7MI S AL 188, Mobile, AL
Built 1996 Load: 45.4 t ADT: 275
SATCHEL PAIGE DR.
FairOver: DRAINAGE DITCH
200 N OF HALLS MILL RD., Mobile, AL
Built 2000 Load: 45.4 t ADT: 3,100
CODEN BELT RD SOUT
FairOver: TIDAL STREAM
0.5 MI SW OF HWY 188, Mobile, AL
Built 1999 Load: 45.4 t ADT: 291
BELLINGRATH RD
FairOver: BAYOU JONAS
1.4 MI N ALA 188, Mobile, AL
Built 2005 Load: 45.4 t ADT: 1,870
SNOW ROAD SOUTH
FairOver: MILLER CREEK
1.4 MI. S.OF AIRPORT BLVD, Mobile, AL
Built 1986 Load: 45.8 t ADT: 8,101
I-10EB TO WATER ST
FairOver: ROYAL/MONROE STS
WEST TUNNEL INTERCHANGE, Mobile, AL
Built 1972 Load: 45.9 t ADT: 12,558
I-65
FairOver: NORTON CREEK
1.4 MI N SR 158, Mobile, AL
Built 1967 Load: 46.1 t ADT: 46,104
WILDWOOD PLACE
FairOver: SPENCERS BRANCH
0.5 MI N COTTAGE HILL RD, Mobile, AL
Built 1978 Load: 46.2 t ADT: 1,145
US 45
FairOver: SILVER CREEK RELIEF
2.8 MI N CO RD 55, Mobile, AL
Built 1931 Load: 46.3 t ADT: 8,598
RAMSEY RD
FairOver: BRANCH OF FRANKLIN CREEK
0.7 MI. N. SR 188, Mobile, AL
Built 1994 Load: 46.4 t ADT: 2,890
US 43
FairOver: THREE MILE CREEK
2.6 MI N BANKHEAD TUNNEL, Mobile, AL
Built 1995 Load: 46.6 t ADT: 1,792
US 98 WB
FairOver: THREE MILE CREEK
0.1 MI W I-65, Mobile, AL
Built 1978 Load: 46.7 t ADT: 18,294
US 98 EB
FairOver: THREE MILE CREEK
0.1 MI W I-65, Mobile, AL
Built 1978 Load: 46.7 t ADT: 18,294
THORNTON PLACE
FairOver: BOLTON BRANCH
200 N YORKSHIRE LANE, Mobile, AL
Built 1971 Load: 46.8 t ADT: 2,030
US 45
FairOver: BEAVER POND CREEK
2.3 MI N CO RD 63, Mobile, AL
Built 1991 Load: 47.1 t ADT: 7,307
CO RD 39 SB
FairOver: I-10
10.4 MI E MISS STATELINE, Mobile, AL
Built 2005 Load: 47.6 t ADT: 5,021
CO RD 39 NB
FairOver: I-10
10.4 MI E MISS.STATE LINE, Mobile, AL
Built 2004 Load: 47.6 t ADT: 5,021
US 98
FairOver: DOUBLE BRANCH RELIEF
1.58 MI E SEMMES, Mobile, AL
Built 1931 Load: 47.7 t ADT: 31,009
SNOW ROAD NORTH
FairOver: PIERCE CREEK
1.5 MI. N.OF AIRPORT BLVD, Mobile, AL
Built 1986 Load: 47.8 t ADT: 9,632
WEST ROAD
FairOver: SPRING BRANCH
1095 S. COTTAGE HILL RD, Mobile, AL
Built 1983 Load: 48.0 t ADT: 590
BELLINGRATH RD
FairOver: FOWL RIVER
1.9 MI S LAURINDINE RD, Mobile, AL
Built 1985 Load: 48.0 t ADT: 4,583
BEVERLY JEFFERIES
FairOver: NOBODIES CREEK
0.9 MI E. MISS STATE LINE, Mobile, AL
Built 2004 Load: 48.1 t ADT: 1,374
US 43
FairOver: GRADY HALL CREEK
4 MI N CO RD 84, Mobile, AL
Built 1963 Load: 48.4 t ADT: 15,349
FILLINGIM ST
FairOver: THREE MILE CREEK
0.3 MI W STANTON RD, Mobile, AL
Built 1990 Load: 48.4 t ADT: 14,915
FLORIDA STREET
FairOver: WOODCOCK BRANCH
495 N AIRPORT BLVD, Mobile, AL
Built 1984 Load: 49.5 t ADT: 10,918
MT. ISLAND DR W
FairOver: WOODCOCK BRANCH
695 N AIRPORT BLVD, Mobile, AL
Built 1983 Load: 49.7 t ADT: 3,806
_VIRGINIA ST
FairOver: CSX RR
_0.15 MI EAST OF I-10, Mobile, AL
Built 2009 Load: 49.7 t ADT: 2,304
ZIEGLER BLVD.
FairOver: THREEMILE CREEK
0.2 MI E CODY RD, Mobile, AL
Built 1972 Load: 49.9 t ADT: 14,762
HOWELLS FERRY RD
FairOver: HAMILTON CREEK
1.0 MI E SNOW RD EXT, Mobile, AL
Built 1994 Load: 50.6 t ADT: 7,217
US 90
FairOver: BRANCH
0.7 MI SW I-10, Mobile, AL
Built 1985 Load: 51.0 t ADT: 26,025
OVERLOOK ROAD
FairOver: BRANCH
1.3 MI. W. US 98, Mobile, AL
Built 1991 Load: 51.0 t ADT: 7,816
UNIVERSITY BLVD
FairOver: BRANCH
0.2 MI N ZEIGLER BLVD, Mobile, AL
Built 1998 Load: 51.1 t ADT: 18,163
GRELOT ROAD
FairOver: MILKHOUSE CREEK
1102 E CODY ROAD, Mobile, AL
Built 1975 Load: 52.2 t ADT: 25,670
US 90 EB
FairOver: TENSAW/SPANISH RIVER
MOBILE/BALDWIN CO LINE, Mobile, AL
Built 1998 Load: 52.3 t ADT: 13,355
US 45
FairOver: PETERSON BRANCH
0.7 MI N I-65, Mobile, AL
Built 1931 Load: 52.6 t ADT: 27,294
MURRAY HILL ROAD
FairOver: CREEK
0.2 MI N US HWY 90, Mobile, AL
Built 2002 Load: 52.6 t ADT: 2,182
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.