County profile · official public datasets

Warren County, MO

151 public highway bridges tracked in the FHWA National Bridge Inventory: 31.8% rated Good, 64.2% Fair, 4% Poor.

151
Public bridges
31.8%
Good condition
4%
Poor condition

The verdict

According to the Federal Highway Administration's 2024 National Bridge Inventory.

Warren County pairs a top-10% lowest Poor-condition share among rated counties in the state with a newer average build year than the state inventory.

Top 10%
lowest Poor share in state
4%
Poor-condition share
151
public highway bridges
1986
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.

Warren County Bridge Snapshot

According to the Federal Highway Administration's 2024 National Bridge Inventory, Warren County ranks #12 of 115 Missouri counties with at least 5 public highway bridges on Poor-condition share (lower share ranks better; currently 4%). Warren County, Missouri contains 151 public highway bridges. Roughly 31.8% are rated “Good,” 64.2% “Fair,” and 4% “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

151

Public highway bridges in Warren County

Good condition

31.8%

48 of 151 rated 7-9

Fair condition

64.2%

97 of 151 rated 5-6

Poor condition

4%

6 of 151 rated 4 or below

In-state Poor-share rank

#12 of 115

Among Missouri counties with 5+ bridges, lower share ranks better

Condition distribution

Share of 151 NBI-tracked bridges by lowest applicable component rating.

Good
31.8% (48)
Fair
64.2% (97)
Poor
4% (6)

Warren County's Poor-condition bridges carry 2,447 vehicle crossings a day

That is 0.9% of the county's reported daily bridge traffic on 4% of its bridges: Poor-condition structures carry less traffic than their share of the inventory. Each Poor bridge averages 408 crossings a day against 1,632 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 151 of 151 bridges in this county that report an average daily traffic count. Source: FHWA National Bridge Inventory, 2024 release.

27.8% of Warren County's bridges have passed the 50-year mark

42 of the 151 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 31.8% 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 40.6% of the county's Poor-condition bridge traffic

RT A S over IS 70, built 1961, carries 994 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 6-bridge count understates how much of the daily burden sits on a single crossing.

Share is of the 2,447 daily crossings on Poor-rated bridges that report a traffic count. Source: FHWA National Bridge Inventory, 2024 release.

When Warren County's bridges were built

151 bridges with a recorded construction year, grouped by decade

bridges

What this shows Construction peaked in the 2000s, when 37 of the county's bridges still in the inventory were built, which is 24.5% of those with a recorded year. That cohort is now 15 to 24 years old in the 2024 inventory. Its average build year is 1986, 7 years newer than the Missouri average of 1979.

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

How Warren County compares with Missouri's closest counties by inventory size

The 5 Missouri counties nearest Warren County in number of bridges, with their condition splits. Its 4% Poor share is the 1st-lowest of these 6. Its average build year of 1986 against a peer-group mean of 1976 is 10 years newer.

Showing the 5 closest of 114 Missouri counties eligible for comparison.

Bridge inventory size and condition shares for Warren County and the 5 Missouri counties closest to it in inventory size
County Bridges Poor
Washington County 157 10.2%
Phelps County 156 8.3%
Clinton County 152 9.9%
Taney County 151 9.9%
Warren County (this page) 151 4%
McDonald County 145 11%

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 Warren 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 Warren County, both outside Missouri so the neighborhoods are not the same-state size table above.

Similar inventory size

Nearest county inventories outside MO (151 bridges here).

Similar average build year

Nearest mean year-built outside MO (1986 here).

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

All 151 Good 48 Fair 97 Poor 6

Good-condition bridges (48)

LOST CR RD

Good

Over: LOST CR

S 38 T 47 N R 3 W, Warren, MO

Built 2017 Load: 16.2 t ADT: 100

COUNTY RD 297

Good

Over: UNNAMED CR

S 26 T 49 N R 3 W, Warren, MO

Built 2019 Load: 19.8 t ADT: 75

MO 94 E

Good

Over: KOCHS CR

S 164 T 45 N R 3 W, Warren, MO

Built 1975 Load: 20.7 t ADT: 598

N. STRINGTOWN RD

Good

Over: TRIB OF INDIAN CAM

S 11 T 47 N R 1 W, Warren, MO

Built 2004 Load: 20.7 t ADT: 300

RT Y E

Good

Over: BEAR CR

S 30 T 47 N R 4 W, Warren, MO

Built 1963 Load: 20.7 t ADT: 225

RT F S

Good

Over: IS 70

S 16 T 47 N R 1 W, Warren, MO

Built 1981 Load: 22.5 t ADT: 5,008

DRY FORK RD

Good

Over: BR OF DRY FORK

S 20 T 46 N R 2 W, Warren, MO

Built 2013 Load: 22.5 t ADT: 75

MO 47 S

Good

Over: MISSOURI RVR UP RR

S 23 T 44 N R 1 W, Warren, MO

Built 2017 Load: 25.2 t ADT: 16,108

RT J N

Good

Over: INDIAN CAMP CR

S 10 T 47 N R 1 W, Warren, MO

Built 2015 Load: 28.8 t ADT: 2,882

POWERLINE RD

Good

Over: DRY CR

S 21 T 48 N R 2 W, Warren, MO

Built 2019 Load: 32.4 t ADT: 100

HOWARD BRANCH RD

Good

Over: UNNAMED CR

S 5 T 45 N R 3 W, Warren, MO

Built 2018 Load: 32.4 t ADT: 205

CHARRETTE CR RD

Good

Over: CHARRETTE CR

S 12 T 45 N R 2 W, Warren, MO

Built 2008 Load: 33.3 t ADT: 40

DRY FORK RD

Good

Over: HOWARD BR

S 5 T 45 N R 2 W, Warren, MO

Built 2006 Load: 34.2 t ADT: 205

MO 47 S

Good

Over: LAKE CR

S 3 T 44 N R 1 W, Warren, MO

Built 2014 Load: 34.2 t ADT: 14,632

N STRINGTOWN RD

Good

Over: INDIAN CAMP CR

S 2 T 47 N R 1 W, Warren, MO

Built 2002 Load: 36.0 t ADT: 300

BERNHEIMER RD

Good

Over: CLEAR BR

S 9 T 45 N R 3 W, Warren, MO

Built 2011 Load: 37.8 t ADT: 35

RANCH RD

Good

Over: INDIAN CAMP CR

S 18 T 47 N R 1 W, Warren, MO

Built 2015 Load: 37.8 t ADT: 112

MO 94 E

Good

Over: SMITH CR

S 302 T 45 N R 3 W, Warren, MO

Built 2018 Load: 38.7 t ADT: 598

RT N S

Good

Over: DRY FK CR

S 180 T 45 N R 2 W, Warren, MO

Built 1989 Load: 38.7 t ADT: 326

SCHOMBERG RD

Good

Over: WATER RUN CR

S 20 T 45 N R 2 W, Warren, MO

Built 2006 Load: 39.6 t ADT: 40

MO 47 S

Good

Over: TUQUE CR

S 33 T 45 N R 1 W, Warren, MO

Built 2011 Load: 39.6 t ADT: 4,606

MO 94 E

Good

Over: KOCHS CR

S 19 T 45 N R 2 W, Warren, MO

Built 2016 Load: 39.6 t ADT: 1,490

MASSAS CR ROAD

Good

Over: MASSAS CRK

S 25 T 47 N R 4 W, Warren, MO

Built 2022 Load: 39.6 t ADT: 30

MO 47 S

Good

Over: CHARRETTE CR

S 14 T 45 N R 2 W, Warren, MO

Built 1995 Load: 39.6 t ADT: 2,254

MO 94 E

Good

Over: TRELOAR CR

S 310 T 45 N R 2 W, Warren, MO

Built 2023 Load: 40.5 t ADT: 1,490

N. STRINGTOWN RD

Good

Over: TRIB OF INDIAN CAM

S 11 T 47 N R 1 W, Warren, MO

Built 2004 Load: 42.3 t ADT: 300

RT D E

Good

Over: BR OF TUQUE CR

S 21 T 45 N R 1 W, Warren, MO

Built 2012 Load: 42.3 t ADT: 1,820

MO 94 E

Good

Over: LOST CR

S 25 T 46 N R 4 W, Warren, MO

Built 2018 Load: 43.2 t ADT: 314

MILL RD

Good

Over: WATER RUN CR

S 20 T 45 N R 2 W, Warren, MO

Built 1999 Load: 44.1 t ADT: 100

PIN OAK CHURCH RD

Good

Over: BRANCH

S 3 T 48 N R 3 W, Warren, MO

Built 2001 Load: 44.1 t ADT: 35

MO 47 S

Good

Over: NS RR

S 28 T 47 N R 2 W, Warren, MO

Built 1978 Load: 44.1 t ADT: 19,204

MASSAS CR RD

Good

Over: MASSAS CR

S 13 T 47 N R 4 W, Warren, MO

Built 1999 Load: 46.8 t ADT: 50

CONCORD HILL RD

Good

Over: DRY FK

S 10 T 45 N R 2 W, Warren, MO

Built 2007 Load: 46.8 t ADT: 250

LOST CR RD

Good

Over: LOST CR

S 36 T 47 N R 3 W, Warren, MO

Built 2016 Load: 48.6 t ADT: 100

MASSAS CR RD

Good

Over: MASSAS CR

S 13 T 47 N R 4 W, Warren, MO

Built 2008 Load: 51.3 t ADT: 50

DRY FORK RD

Good

Over: DRY FORK CR

S 5 T 46 N R 2 W, Warren, MO

Built 2009 Load: 51.3 t ADT: 150

DRY FORK RD

Good

Over: DRY FORK CR

S 5 T 46 N R 2 W, Warren, MO

Built 2009 Load: 51.3 t ADT: 150

DRY FORK RD

Good

Over: BR OF DRY FORK CR

S 5 T 46 N R 2 W, Warren, MO

Built 2009 Load: 51.3 t ADT: 150

SMITH CREEK RD

Good

Over: SMITH CR

S 10 T 45 N R 3 W, Warren, MO

Built 2001 Load: 53.1 t ADT: 50

W WARRENTON BLVD E

Good

Over: IS 70

S 19 T 47 N R 2 W, Warren, MO

Built 2018 Load: 55.8 t ADT: 1,995

CASE RD

Good

Over: LOUTRE SLOUGH

S 21 T 46 N R 4 W, Warren, MO

Built 2006 Load: 65.7 t ADT: 35

HOWARD BRANCH RD

Good

Over: HOWARD BR

S 6 T 45 N R 2 W, Warren, MO

Built 2007 Load: 69.3 t ADT: 35

MASSAS CR RD

Good

Over: MASSAS CR

S 13 T 47 N R 4 W, Warren, MO

Built 2002 Load: 72.0 t ADT: 50

MASSAS CR RD

Good

Over: MASSAS CR

S 13 T 47 N R 4 W, Warren, MO

Built 2005 Load: 72.9 t ADT: 50

MO 94 E

Good

Over: PEERS CR

S 27 T 45 N R 2 W, Warren, MO

Built 1975 Load: 77.4 t ADT: 1,490

CHARRETTE CR RD

Good

Over: BR OF CHARRETTE CR

S 1 T 45 N R 2 W, Warren, MO

Built 2007 Load: 77.4 t ADT: 40

SELLENSCHUTTER RD

Good

Over: HOWARD BR

S 12 T 45 N R 3 W, Warren, MO

Built 2006 Load: 84.6 t ADT: 50

HOWARD BRANCH RD

Good

Over: HOWARD BR

S 1 T 45 N R 3 W, Warren, MO

Built 2000 Load: 99.9 t ADT: 30

Read our methodology - how this data is sourced, computed, and verified.

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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.