Total bridges
142
Public highway bridges in Miller County
County profile · official public datasets
Miller County, MO
142 public highway bridges tracked in the FHWA National Bridge Inventory: 40.1% rated Good, 49.3% Fair, 10.6% Poor.
- 142
- Public bridges
- 40.1%
- Good condition
- 10.6%
- Poor condition
The verdict
According to the Federal Highway Administration's 2024 National Bridge Inventory.
Miller County pairs a higher-than-median Poor-condition share among rated counties in the state with an older average build year than the state inventory.
- 74th
- of 115 on Poor share
- 10.6%
- Poor-condition share
- 142
- public highway bridges
- 1971
- 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.
Miller County Bridge Snapshot
According to the Federal Highway Administration's 2024 National Bridge Inventory, Miller County ranks #74 of 115 Missouri counties with at least 5 public highway bridges on Poor-condition share (lower share ranks better; currently 10.6%). Miller County, Missouri contains 142 public highway bridges. Roughly 40.1% are rated “Good,” 49.3% “Fair,” and 10.6% “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
40.1%
57 of 142 rated 7-9
Fair condition
49.3%
70 of 142 rated 5-6
Poor condition
10.6%
15 of 142 rated 4 or below
In-state Poor-share rank
#74 of 115
Among Missouri counties with 5+ bridges, lower share ranks better
Condition distribution
Share of 142 NBI-tracked bridges by lowest applicable component rating.
Good 40.1% (57)
Fair 49.3% (70)
Poor 10.6% (15)
Miller County's Poor-condition bridges carry 3,687 vehicle crossings a day
That is 1.4% of the county's reported daily bridge traffic on 10.6% of its bridges: Poor-condition structures carry less traffic than their share of the inventory. Each Poor bridge averages 246 crossings a day against 1,849 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 142 of 142 bridges in this county that report an average daily traffic count. Source: FHWA National Bridge Inventory, 2024 release.
54.9% of Miller County's bridges have passed the 50-year mark
78 of the 142 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 40.1% 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 57.3% of the county's Poor-condition bridge traffic
MO 42 E over SPRING BR, built 1964, carries 2,112 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 15-bridge count understates how much of the daily burden sits on a single crossing.
Share is of the 3,687 daily crossings on Poor-rated bridges that report a traffic count. Source: FHWA National Bridge Inventory, 2024 release.
When Miller County's bridges were built
142 bridges with a recorded construction year, grouped by decade
- 1900s 4
1900–1909
4 bridges
- 1910s 3
1910–1919
3 bridges
- 1920s 6
1920–1929
6 bridges
- 1930s
1930–1939
32 bridges
- 1940s 1
1940–1949
1 bridges
- 1950s 8
1950–1959
8 bridges
- 1960s
1960–1969
13 bridges
- 1970s
1970–1979
13 bridges
- 1980s 1
1980–1989
1 bridges
- 1990s 10
1990–1999
10 bridges
- 2000s
2000–2009
20 bridges
- 2010s
2010–2019
24 bridges
- 2020s 7
2020–2029
7 bridges
What this shows Construction peaked in the 1930s, when 32 of the county's bridges still in the inventory were built, which is 22.5% of those with a recorded year. That cohort is now 85 to 94 years old in the 2024 inventory. Its average build year is 1971, 8 years older than the Missouri average of 1979.
How Miller County compares with Missouri's closest counties by inventory size
The 5 Missouri counties nearest Miller County in number of bridges, with their condition splits. Its 10.6% Poor share is the 3rd-lowest of these 6. Its average build year of 1971 against a peer-group mean of 1974 is in line with the group.
Showing the 5 closest of 114 Missouri counties eligible for comparison.
| County | Bridges | Good | Fair | Poor | Avg. built |
|---|---|---|---|---|---|
| McDonald County | 145 | 25.5% | 63.4% | 11% | 1976 |
| Gasconade County | 143 | 32.2% | 62.9% | 4.9% | 1972 |
| Miller County (this page) | 142 | 40.1% | 49.3% | 10.6% | 1971 |
| St. Clair County | 139 | 25.2% | 55.4% | 19.4% | 1972 |
| Ralls County | 138 | 31.9% | 60.9% | 7.2% | 1976 |
| Mercer County | 137 | 44.5% | 36.5% | 19% | 1976 |
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 Miller 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 Miller County, both outside Missouri so the neighborhoods are not the same-state size table above.
Similar inventory size
Nearest county inventories outside MO (142 bridges here).
- Monroe County, AL · 142 bridges
- Henderson County, IL · 142 bridges
- Graham County, KS · 142 bridges
- Kenton County, KY · 142 bridges
Similar average build year
Nearest mean year-built outside MO (1971 here).
- Wayne County, MI · avg 1971 · 1,026 bridges
- Baltimore County, MD · avg 1971 · 783 bridges
- Washington County, PA · avg 1971 · 655 bridges
- Linn County, OR · avg 1971 · 566 bridges
Source: FHWA National Bridge Inventory, 2024 release. Peers floor at 10 bridges so stub inventories cannot own the match.
Fair-condition bridges (70)
SWINGING BR RD
FairOver: MILL CR
S 36 T 39 N R 15 W, Miller, MO
Built 1910 Load: 0.0 t ADT: 30
TAVERN CREEK RD
FairOver: LIT TAVERN CR
S 33 T 39 N R 12 W, Miller, MO
Built 1930 Load: 2.7 t ADT: 15
TAVERN CR RD
FairOver: RABBITHEAD CR
S 24 T 39 N R 13 W, Miller, MO
Built 1930 Load: 3.6 t ADT: 100
SHAW RD
FairOver: BLYTHES CR
S 6 T 42 N R 14 W, Miller, MO
Built 1930 Load: 4.5 t ADT: 25
BLACKMER RD
FairOver: E FK OF BEAR CR
S 3 T 39 N R 15 W, Miller, MO
Built 1930 Load: 6.3 t ADT: 55
BLUE RIDGE
FairOver: LIT BEAR CR
S 4 T 39 N R 15 W, Miller, MO
Built 1930 Load: 9.0 t ADT: 30
SPARKS RD
FairOver: BLYTHES CR
S 16 T 42 N R 15 W, Miller, MO
Built 1920 Load: 9.9 t ADT: 45
KLASS RD
FairOver: SALINE CR
S 9 T 41 N R 15 W, Miller, MO
Built 1930 Load: 11.7 t ADT: 90
BAGNELL DAM BLVD S
FairOver: BAGNELL DAM
S 29 T 40 N R 15 W, Miller, MO
Built 1929 Load: 11.7 t ADT: 7,430
HONEYSUCKLE RD
FairOver: BLUE SPRINGS CR
S 26 T 41 N R 16 W, Miller, MO
Built 1994 Load: 13.5 t ADT: 50
RT A E
FairOver: TAVERN CR
S 29 T 40 N R 12 W, Miller, MO
Built 1900 Load: 14.4 t ADT: 359
RT EE E
FairOver: CR
S 8 T 38 N R 13 W, Miller, MO
Built 1900 Load: 14.4 t ADT: 542
RT EE E
FairOver: BARREN FK
S 8 T 38 N R 13 W, Miller, MO
Built 1900 Load: 14.4 t ADT: 542
RT EE E
FairOver: RABBITHEAD BR
S 25 T 39 N R 13 W, Miller, MO
Built 1939 Load: 14.4 t ADT: 542
GREENRIDGE RD
FairOver: SOUTH MOREAU CR
S 9 T 42 N R 15 W, Miller, MO
Built 1930 Load: 16.2 t ADT: 75
SALEM RD
FairOver: BLYTHES CR
S 27 T 42 N R 15 W, Miller, MO
Built 1922 Load: 16.2 t ADT: 100
BEACON RD
FairOver: UNKNOWN CREEK
S 6 T 41 N R 15 W, Miller, MO
Built 1950 Load: 16.2 t ADT: 40
OLD TUSCUMBIA RD
FairOver: SALINE CR
S 10 T 41 N R 15 W, Miller, MO
Built 1930 Load: 16.2 t ADT: 100
BURKLE POND RD
FairOver: SALINE CR
S 1 T 41 N R 15 W, Miller, MO
Built 1930 Load: 16.2 t ADT: 50
OLD ST THOMAS RD
FairOver: SUGAR CR
S 11 T 41 N R 12 W, Miller, MO
Built 1930 Load: 16.2 t ADT: 25
OLD TEN MILE RD
FairOver: CUB CR
S 25 T 41 N R 13 W, Miller, MO
Built 1970 Load: 16.2 t ADT: 30
BUNKER RD
FairOver: BR LITTLE GRAVOIS
S 30 T 41 N R 15 W, Miller, MO
Built 1940 Load: 16.2 t ADT: 60
WOODS RD
FairOver: LIT SALINE CR
S 30 T 41 N R 14 W, Miller, MO
Built 1950 Load: 16.2 t ADT: 25
RIDGE RD
FairOver: BRANCH OF LIT TAVE
S 25 T 41 N R 12 W, Miller, MO
Built 1930 Load: 16.2 t ADT: 30
LICK CREEK RD
FairOver: LICK CR
S 20 T 40 N R 14 W, Miller, MO
Built 1975 Load: 16.2 t ADT: 50
BRUSHY CREEK RD
FairOver: TRIB. TO TAVERN CR
S 16 T 40 N R 12 W, Miller, MO
Built 1930 Load: 16.2 t ADT: 30
SEQUOIA RD
FairOver: HAW CR
S 5 T 39 N R 13 W, Miller, MO
Built 1930 Load: 16.2 t ADT: 25
SPRING GARDEN RD
FairOver: BRUSH CR
S 15 T 42 N R 14 W, Miller, MO
Built 1930 Load: 16.2 t ADT: 15
HAYS DR
FairOver: SALINE CR
S 9 T 41 N R 15 W, Miller, MO
Built 1900 Load: 16.2 t ADT: 300
ALLEN RD
FairOver: WRIGHTS CR
S 4 T 40 N R 15 W, Miller, MO
Built 1930 Load: 16.2 t ADT: 100
LAKELAND RD
FairOver: GIER BR
S 7 T 40 N R 15 W, Miller, MO
Built 1930 Load: 16.2 t ADT: 15
MO 42 E
FairOver: BARREN FK
S 30 T 39 N R 13 W, Miller, MO
Built 1964 Load: 17.1 t ADT: 2,112
RT C S
FairOver: DEANE CR
S 17 T 38 N R 14 W, Miller, MO
Built 1966 Load: 17.1 t ADT: 425
MO 87 S
FairOver: MOREAU CR
S 2 T 42 N R 15 W, Miller, MO
Built 1963 Load: 20.7 t ADT: 1,436
US 54 W
FairOver: LITTLE GRAVOIS CR
S 7 T 40 N R 15 W, Miller, MO
Built 1966 Load: 21.6 t ADT: 7,493
RT A E
FairOver: TAVERN CR
S 29 T 40 N R 12 W, Miller, MO
Built 1958 Load: 21.6 t ADT: 359
MO 42 E
FairOver: JAKE BR
S 29 T 39 N R 14 W, Miller, MO
Built 1937 Load: 23.4 t ADT: 3,240
MO 42 E
FairOver: RABBITHEAD BR
S 25 T 39 N R 13 W, Miller, MO
Built 1929 Load: 23.4 t ADT: 2,112
COUNTYSIDE RD
FairOver: TRIB. TO TAVERN CR
S 11 T 39 N R 14 W, Miller, MO
Built 1950 Load: 25.2 t ADT: 25
RT HH S
FairOver: LICK CR
S 20 T 40 N R 14 W, Miller, MO
Built 1954 Load: 26.1 t ADT: 158
MO 52 E
FairOver: US 54
S 15 T 41 N R 15 W, Miller, MO
Built 1972 Load: 27.0 t ADT: 5,905
SALINE VALLEY DR
FairOver: SALINE CR
S 7 T 41 N R 14 W, Miller, MO
Built 2010 Load: 27.0 t ADT: 15
MO 52 E
FairOver: S FK MOREAU RVR
S 30 T 42 N R 15 W, Miller, MO
Built 1981 Load: 27.9 t ADT: 6,454
MO 42 E
FairOver: BOLINE CR
S 16 T 39 N R 12 W, Miller, MO
Built 1933 Load: 27.9 t ADT: 3,074
US 54 E
FairOver: ABANDONED RR
S 35 T 42 N R 15 W, Miller, MO
Built 1973 Load: 28.8 t ADT: 5,349
SALINE VALLEY RD
FairOver: SALINE CR
S 15 T 41 N R 14 W, Miller, MO
Built 1930 Load: 29.7 t ADT: 25
US 54 W
FairOver: OSAGE RVR
S 29 T 40 N R 15 W, Miller, MO
Built 1966 Load: 32.4 t ADT: 12,204
WHITE SCHOOL RD
FairOver: WIEMER CR
S 26 T 40 N R 12 W, Miller, MO
Built 1998 Load: 32.4 t ADT: 50
US 54 E
FairOver: BU 54
S 26 T 42 N R 15 W, Miller, MO
Built 1973 Load: 34.2 t ADT: 5,349
US 54 W
FairOver: BU 54
S 26 T 42 N R 15 W, Miller, MO
Built 1973 Load: 34.2 t ADT: 7,785
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.