Total bridges
360
Public highway bridges in Polk County
County profile · official public datasets
Polk County, FL
360 public highway bridges tracked in the FHWA National Bridge Inventory: 55.3% rated Good, 44.7% Fair, 0% Poor.
- 360
- Public bridges
- 55.3%
- Good condition
- 0%
- Poor condition
The verdict
According to the Federal Highway Administration's 2024 National Bridge Inventory.
Polk County posts a top-1% lowest Poor-condition share among rated counties in the state across mid-size county bridge inventory.
- Top 1%
- lowest Poor share in state
- 0%
- Poor-condition share
- 360
- 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.
Polk County Bridge Snapshot
According to the Federal Highway Administration's 2024 National Bridge Inventory, Polk County ranks #1 of 67 Florida counties with at least 5 public highway bridges on Poor-condition share (lower share ranks better; currently 0%). Polk County, Florida contains 360 public highway bridges. Roughly 55.3% are rated “Good,” 44.7% “Fair,” and 0% “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
55.3%
199 of 360 rated 7-9
Fair condition
44.7%
161 of 360 rated 5-6
Poor condition
0%
0 of 360 rated 4 or below
In-state Poor-share rank
#1 of 67
Among Florida counties with 5+ bridges, lower share ranks better
Condition distribution
Share of 360 NBI-tracked bridges by lowest applicable component rating.
Good 55.3% (199)
Fair 44.7% (161)
Poor 0% (0)
47.2% of Polk County's bridges have passed the 50-year mark
170 of the 360 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 55.3% 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.
When Polk County's bridges were built
360 bridges with a recorded construction year, grouped by decade
- 1910s 1
1910–1919
1 bridges
- 1920s 7
1920–1929
7 bridges
- 1930s 10
1930–1939
10 bridges
- 1940s 23
1940–1949
23 bridges
- 1950s 27
1950–1959
27 bridges
- 1960s
1960–1969
83 bridges
- 1970s 26
1970–1979
26 bridges
- 1980s 18
1980–1989
18 bridges
- 1990s
1990–1999
89 bridges
- 2000s
2000–2009
38 bridges
- 2010s 28
2010–2019
28 bridges
- 2020s 10
2020–2029
10 bridges
What this shows Construction peaked in the 1990s, when 89 of the county's bridges still in the inventory were built, which is 24.7% of those with a recorded year. That cohort is now 25 to 34 years old in the 2024 inventory. Its average build year (1979) matches the Florida average (1983).
How Polk County compares with Florida's closest counties by inventory size
The 5 Florida counties nearest Polk County in number of bridges, with their condition splits. Its 0% Poor share is the 1st-lowest of these 6. Its average build year of 1979 against a peer-group mean of 1983 is in line with the group.
Showing the 5 closest of 66 Florida counties eligible for comparison.
| County | Bridges | Good | Fair | Poor | Avg. built |
|---|---|---|---|---|---|
| Pinellas County | 435 | 63.7% | 34.5% | 1.8% | 1983 |
| Lee County | 391 | 75.4% | 23.8% | 0.8% | 1982 |
| Collier County | 370 | 73.2% | 24.9% | 1.9% | 1981 |
| Polk County (this page) | 360 | 55.3% | 44.7% | 0% | 1979 |
| Sarasota County | 298 | 57.7% | 41.6% | 0.7% | 1982 |
| Osceola County | 255 | 62.4% | 37.6% | 0% | 1985 |
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 Polk 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 Polk County, both outside Florida so the neighborhoods are not the same-state size table above.
Similar inventory size
Nearest county inventories outside FL (360 bridges here).
- St. Tammany County, LA · 360 bridges
- San Mateo County, CA · 361 bridges
- Washita County, OK · 361 bridges
- Richland County, SC · 361 bridges
Similar average build year
Nearest mean year-built outside FL (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 (360)
US-98 (BARTOW RD.)
FairOver: CSX RR & CITY STREETS
0.1MI WEST OF MAIN ST., Polk, FL
Built 2003 Load: 34.6 t ADT: 39,000
SR-37
FairOver: PAYNE BRANCH
3.3 M S OF SR674, Polk, FL
Built 1971 Load: 34.7 t ADT: 3,300
CR-54 NB R REGAN P
FairOver: I-4 (SR-400)
2.5 MI EAST OF US-27, Polk, FL
Built 2004 Load: 34.7 t ADT: 9,300
COUNTY LINE RD.
FairOver: ENGLISH CREEK
0.5 MI NORTH OF EWELL RD, Polk, FL
Built 1990 Load: 34.7 t ADT: 15,100
CR-547
FairOver: HORSE CREEK
0.4MI N OF BARGIN BARN RD, Polk, FL
Built 1960 Load: 34.9 t ADT: 3,800
US-17 NB SR-35
FairOver: WHIDDEN CREEK
3.2 MI S OF US-98, Polk, FL
Built 1983 Load: 35.7 t ADT: 6,767
E. LAKE PARKER DR.
FairOver: LAKE PARKER CANAL
0.8MI NORTH OF US-92, Polk, FL
Built 1950 Load: 35.7 t ADT: 3,944
SR-540 WB
FairOver: PEACE RIVER CANAL
0.3MI WEST OF US-27, Polk, FL
Built 1967 Load: 35.9 t ADT: 13,750
CR-542
FairOver: LAKE HOWARD CANAL
1.1 MI. WEST OF US-17, Polk, FL
Built 1955 Load: 35.9 t ADT: 10,100
SR-540 EB
FairOver: PEACE RIVER CANAL
0.3MI WEST OF US-27, Polk, FL
Built 1967 Load: 35.9 t ADT: 13,750
SR-60
FairOver: ALT. US-27 (SR-17)
1.2 MI EAST OF US-27, Polk, FL
Built 1966 Load: 36.1 t ADT: 26,500
POINCIANA PARKWAY
FairOver: CARTERS CANAL
1.1MI W OF MARIGOLD AVE., Polk, FL
Built 1984 Load: 36.3 t ADT: 4,000
MARIGOLD AVE.
FairOver: LILY CANAL
5MI S OF CYPRESS PARKWAY, Polk, FL
Built 1984 Load: 36.3 t ADT: 14,100
POINCIANA PARKWAY
FairOver: LAKE MARION CREEK
1.1MI W OF MARIGOLD AVE., Polk, FL
Built 1984 Load: 36.3 t ADT: 4,000
US-98 (SR-700)
FairOver: BEAR CREEK
0.2 MI NORTH OF SR-60, Polk, FL
Built 1960 Load: 36.7 t ADT: 42,000
CR-630
FairOver: SWEET CLOUD DITCH
3.8 MI W OF SR-60, Polk, FL
Built 1973 Load: 36.9 t ADT: 1,100
COUNTY LINE RD.
FairOver: HENRY BUNNS CREEK
2.0 MI WEST OF US-17, Polk, FL
Built 1960 Load: 37.8 t ADT: 198
COUNTY LINE RD
FairOver: BRANCH OF CHARLIE CREEK
6.3 Mi. West of US-27, Polk, FL
Built 1960 Load: 37.9 t ADT: 500
CR-540A
FairOver: TRIANGLE LAKE
0.2 MI WEST OF SR-37, Polk, FL
Built 2007 Load: 38.0 t ADT: 9,000
91 MINE ROAD
FairOver: PEACE CREEK
1 MI NORTH OF SR-60, Polk, FL
Built 1992 Load: 38.1 t ADT: 1,654
S KISSENGEN AVE.
FairOver: SIX MILE CREEK
3.1 MI NORTH OF CR-640, Polk, FL
Built 1986 Load: 39.2 t ADT: 573
SR-60 EB
FairOver: PEACE CREEK RELIEF
4.1 MI WEST OF US-27, Polk, FL
Built 1965 Load: 40.4 t ADT: 13,000
US-27 (SR-25)
FairOver: CLINCH CREEK
0.6 MI. SOUTH OF US-98, Polk, FL
Built 1939 Load: 40.7 t ADT: 19,400
I-4 (SR-400)
FairOver: LAKE GIBSON DRAIN CANAL
1.8MI E OF US-98, Polk, FL
Built 1961 Load: 40.8 t ADT: 103,500
US-17 SB
FairOver: BEAR CREEK
0.4 MI NORTH OF US-98, Polk, FL
Built 1985 Load: 41.9 t ADT: 12,000
SR-542
FairOver: Peace Creek
0.36 Mi. West of US-27, Polk, FL
Built 2022 Load: 42.1 t ADT: 18,300
CR-640
FairOver: CSX R/R
0.7 MI EAST OF SR-37, Polk, FL
Built 1969 Load: 42.8 t ADT: 4,000
CR657 MT PISGAH RD
FairOver: BOWLEGS CREEK
1 MI EAST OF US-17, Polk, FL
Built 1960 Load: 43.5 t ADT: 600
SR-557A (CR-557)
FairOver: I-4 (SR-400)
4.0 MI EAST OF SR-559, Polk, FL
Built 1961 Load: 43.5 t ADT: 13,600
CR-664 CO LINE RD
FairOver: BRIANS RUN
8.0 MI E OF US-17, Polk, FL
Built 1965 Load: 43.9 t ADT: 500
OLD BOWLING GRN RD
FairOver: MANURE CREEK
0.25 MI S OF HUTCHINS RD, Polk, FL
Built 1950 Load: 44.1 t ADT: 393
I-4 WB (SR-400)
FairOver: CR-582 (SOCRUM LOOP RD)
1.4 MI E OF US-98, Polk, FL
Built 1961 Load: 44.2 t ADT: 51,750
I-4 EB (SR-400)
FairOver: CR-582 (SOCRUM LOOP RD)
1.4MI E OF US-98, Polk, FL
Built 1961 Load: 44.2 t ADT: 51,750
US-17 (SR-555)
FairOver: GRAVEL CREEK
0.2 MI SOUTH OF US-92, Polk, FL
Built 1934 Load: 45.4 t ADT: 27,500
SR-33
FairOver: PIT CREEK
0.3MI S OF 1-4 (SR-400), Polk, FL
Built 1940 Load: 45.4 t ADT: 13,000
OLD BARTOW/LK WALE
FairOver: PEACE CREEK CANAL
1.1 MI NORTH OF SR-60, Polk, FL
Built 1998 Load: 45.6 t ADT: 866
SR-60
FairOver: GASKIN CREEK
5.2MI E OF US-17 OVERPASS, Polk, FL
Built 1951 Load: 45.7 t ADT: 26,000
SWINDELL ROAD
FairOver: ITCHEPACKESASSA CREEK
0.1 MI EAST OF WALKER RD, Polk, FL
Built 1988 Load: 46.0 t ADT: 1,563
SR-544
FairOver: LAKE HAMILTON CANAL
0.8MI WEST OF US-27, Polk, FL
Built 1964 Load: 46.4 t ADT: 28,000
US-27 (SR-25)
FairOver: MCCOY DRAINAGE DITCH
4.4 MI. NORTH OF US-98, Polk, FL
Built 1953 Load: 49.0 t ADT: 18,500
SR-471
FairOver: GATOR CREEK
3.7MI NORTH OF US-98, Polk, FL
Built 1965 Load: 49.4 t ADT: 3,700
SR60 WB
FairOver: N PRONG ALAFIA RIVER
3.1MI E OF COUNTY LINE RD, Polk, FL
Built 1999 Load: 49.4 t ADT: 11,750
WALNUT ST.
FairOver: FAIRWAY DITCH
0.5MI E OF MARIGOLD AVE., Polk, FL
Built 1970 Load: 50.7 t ADT: 4,500
MOORE RD.
FairOver: MARSH CREEK
0.25MI SOF DEEN STILL RD, Polk, FL
Built 2006 Load: 54.2 t ADT: 1,707
N LAKE REEDY BLVD
FairOver: REEDY DITCH
245FT EAST OF CR-630, Polk, FL
Built 1940 Load: 54.8 t ADT: 1,082
US17 & US92(SR600)
FairOver: HORSE CREEK
1.1 MI NORTH OF CR-547, Polk, FL
Built 1934 Load: 55.7 t ADT: 20,500
CARPENTERS WAY
FairOver: I-4 (SR-400)
0.9MI E OF US-98, Polk, FL
Built 2004 Load: 56.2 t ADT: 6,732
AVENUE N SW
FairOver: LAKE MAY CANAL
0.09 MI. W OF 9TH ST. SW, Polk, FL
Built 1998 Load: 56.2 t ADT: 7,500
SR-33
FairOver: PARKER CREEK
GRIFFIN RD AND SR-33, Polk, FL
Built 1994 Load: 57.0 t ADT: 31,000
SR-60
FairOver: KISSIMMEE RIVER
26.6 MI EAST OF US-27, Polk, FL
Built 2003 Load: 57.1 t ADT: 10,600
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.