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.
All bridges (612)
IRVINGTON-BLB HWY
FairOver: HAMMAR CREEK
2.2 MI N INT 19 * SR 188, Mobile, AL
Built 1980 Load: 35.4 t ADT: 5,383
GIRBY ROAD
FairOver: SPRING CREEK
0.1MI. W OF DEMETROPOLIS, Mobile, AL
Built 1999 Load: 35.5 t ADT: 4,740
MOTEL COURT
FairOver: CREEK
0.1 MI E OF COCA-COLA RD, Mobile, AL
Built 1984 Load: 35.6 t ADT: 113
I-65 NB
FairOver: RAMP 2 * NORFOLK SO RR
0.2 MI N E US 43, Mobile, AL
Built 1970 Load: 35.7 t ADT: 11,145
SR 193
FairOver: SOUTH DEER RIVER
3.5 MI S HAMILTON BLVD, Mobile, AL
Built 1976 Load: 35.7 t ADT: 7,959
GRANDBAY WILMER S
FairOver: MILLERS CREEK
3.1 MI S CO RD 56, Mobile, AL
Built 1990 Load: 35.7 t ADT: 4,817
SR 193
FairOver: THEODORE INDS CANAL
1.3 MI S HAMILTON BLVD, Mobile, AL
Built 1976 Load: 35.8 t ADT: 11,122
SR 158 W.B.
FairOver: COLLEGE PARKWAY
1.7 MI E US 45, Mobile, AL
Built 1967 Load: 35.9 t ADT: 15,250
US 90
FairOver: RATTLESNAKE BRANCH
0.1 MI E I-10, Mobile, AL
Built 1952 Load: 36.0 t ADT: 22,127
MAUDELAYNE DR.N.
FairOver: SPRING BRANCH
200 W BROOKLINE DR, Mobile, AL
Built 1973 Load: 36.1 t ADT: 3,690
FORT LAKE ROAD
FairOver: BAY BRANCH
2.0 MI SW CO 11, Mobile, AL
Built 1992 Load: 36.4 t ADT: 1,427
US 43 NB
FairOver: SISTERS CREEK
1.7 MI N CO RD 84, Mobile, AL
Built 2001 Load: 36.4 t ADT: 10,772
ZIEGLER BLVD.
FairOver: BRANCH
0.3 MI W FOREST DALE DR., Mobile, AL
Built 1976 Load: 36.6 t ADT: 16,235
VIADUCT RD
FairOver: BRANCH FRM RESERVIOR
0.7 MI E US 43, Mobile, AL
Built 1996 Load: 36.6 t ADT: 707
HILLCREST ROAD
FairOver: HALLS MILL CREEK
1.4 MI N THREE NOTCH RD, Mobile, AL
Built 2009 Load: 36.6 t ADT: 18,005
MICHIGAN AVENUE
FairOver: C.S.X RR
100 E OF I-10, Mobile, AL
Built 2012 Load: 36.6 t ADT: 9,745
LAFITTE ROAD
FairOver: BAYOU SARA
1.3 MI. W. CO. 55, Mobile, AL
Built 1960 Load: 36.7 t ADT: 1,380
I-65
FairOver: GUM TREE BRANCH
1.3 MI N SR 17, Mobile, AL
Built 1965 Load: 36.7 t ADT: 63,803
CREEKWOOD DRIVE
FairOver: TRIB TO SECOND CREEK
0.38MI W OF CODY RD, Mobile, AL
Built 1997 Load: 36.7 t ADT: 1,550
LITTLE RIVER ROAD
FairOver: SNAKE BAYOU
0.5 MI W SR 188, Mobile, AL
Built 1976 Load: 36.8 t ADT: 2,501
US 98
FairOver: ICG RR
SEMMES, Mobile, AL
Built 1984 Load: 36.8 t ADT: 28,911
MISSION ROAD
FairOver: PASTURE CREEK
0.2 MI FROM END MISSION, Mobile, AL
Built 1990 Load: 36.8 t ADT: 128
HAMILTON BLVD
FairOver: WHISKEY BRANCH
1.7 MI E US 90, Mobile, AL
Built 1981 Load: 36.9 t ADT: 5,701
HAMILTON BLVD
FairOver: RABBIT CREEK
0.7 MI E JCT HWY 90, Mobile, AL
Built 1981 Load: 36.9 t ADT: 7,146
TERRELL RD.
FairOver: PERCH CREEK
0.3 MI E OF D.I.P., Mobile, AL
Built 2001 Load: 37.0 t ADT: 1,032
SNOW ROAD N
FairOver: HAMILTON CREEK
1.2 MI N CO RD 70, Mobile, AL
Built 1981 Load: 37.1 t ADT: 7,550
WESTWOOD STREET
FairOver: WOODCOCK BRANCH
1085 N AIRPORT BLVD, Mobile, AL
Built 1982 Load: 37.1 t ADT: 1,234
I-65
FairOver: CHICKASAW CREEK
3.8 MI N US 45, Mobile, AL
Built 2003 Load: 37.1 t ADT: 64,197
US 43
FairOver: BEAVER DAM CREEK
1.3 MI N JCT CO RD 96, Mobile, AL
Built 1963 Load: 37.3 t ADT: 15,349
SAGE AVE.
FairOver: ESLAVA CREEK
0.2 MI S. AIRPORT BLVD, Mobile, AL
Built 1962 Load: 37.3 t ADT: 4,057
FRTG RD TO I165NB
FairOver: PRICE AVENUE
I165 @ PRICE AVENUE, Mobile, AL
Built 1993 Load: 37.4 t ADT: 2,306
OLD PASCAGOULA RD
FairOver: RABBIT CREEK
1.7 MI W HWY 90, Mobile, AL
Built 1981 Load: 37.6 t ADT: 7,448
COTTAGE HILL ROAD
FairOver: MONTLIMAR CREEK
0.3 MI W I 65, Mobile, AL
Built 1986 Load: 37.6 t ADT: 28,689
US 90/COCHRANE BR
FairOver: MOBILE RIVER
0.2 MI E US 43, Mobile, AL
Built 1991 Load: 37.6 t ADT: 19,190
US 90 NORTH SER RD
FairOver: WRAGG SWAMP CANAL
0.5 MI W I-65, Mobile, AL
Built 2004 Load: 37.8 t ADT: 5,695
I-10 WB * EB
FairOver: SOUTH CAROLINA ST
3.1 MI E SR 163, Mobile, AL
Built 1966 Load: 37.9 t ADT: 70,156
US 43
FairOver: PAULINES BRANCH
2.5 MI N CO RD 84, Mobile, AL
Built 1930 Load: 38.0 t ADT: 16,962
ELIZA JORDAN RD S
FairOver: PIERCE CREEK
1.6 MI S OF COUNTY RD 70, Mobile, AL
Built 1981 Load: 38.0 t ADT: 3,565
US 43 NB
FairOver: COLD CREEK
0.5 MI N CO RD 84, Mobile, AL
Built 1930 Load: 38.1 t ADT: 10,772
AIRPORT BLVD
FairOver: MONTLIMAR CREEK
0.2 MI W I65, Mobile, AL
Built 1960 Load: 38.1 t ADT: 54,377
WATER ST TO I10E/W
FairOver: ROYAL ST
WEST TUNNEL INTERCHANGE, Mobile, AL
Built 1972 Load: 38.1 t ADT: 11,019
I65 SERV. RD EAST
FairOver: BRANCH
915 N SAILORS RD, Mobile, AL
Built 1975 Load: 38.1 t ADT: 315
MCLAUGHLIN DRIVE
FairOver: FLEETWOOD DRAINAGE
0.26MI. W. NAVCO ROAD, Mobile, AL
Built 1981 Load: 38.1 t ADT: 181
I-65 SB
FairOver: TURNER RD * WHISTLER AVE
0.9 MI N US 45, Mobile, AL
Built 1965 Load: 38.4 t ADT: 40,331
SR 163
FairOver: DOG RIVER
5.8 MI S I-10, Mobile, AL
Built 1995 Load: 38.5 t ADT: 7,847
VISTA BONITA DR.
FairOver: SPENCERS BRANCH
0.2 MI E KNOLLWOOD DR, Mobile, AL
Built 1978 Load: 38.6 t ADT: 1,557
PINE HILL DR
FairOver: ESLAVA CREEK
0.3 MI S US 90, Mobile, AL
Built 1956 Load: 38.6 t ADT: 1,001
BRANDY RUN ROAD
FairOver: TWELVE MILE CREEK
HIGHLAND WOODS SUBDIV., Mobile, AL
Built 1977 Load: 38.7 t ADT: 22
STANTON RD
FairOver: THREE MILE CREEK
0.4 MI N SPRING HILL AVE, Mobile, AL
Built 1993 Load: 38.8 t ADT: 10,742
DAUPHIN ST.
FairOver: MONTLIMAR CREEK
0.5 MI W I65, Mobile, AL
Built 1975 Load: 39.1 t ADT: 23,251
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.