Jefferson County, MO

411 public highway bridges

Jefferson County Bridge Snapshot

Jefferson County, Missouri contains 411 public highway bridges in the FHWA National Bridge Inventory. Roughly 30.2% are rated “Good,” 51.1% “Fair,” 3.4% “Poor,” and 3.4% are classified as structurally deficient — the federal designation for spans whose deck, superstructure, or substructure has been rated 4 or below on the 0–9 NBI scale. Structurally deficient does not mean unsafe to cross; it means the bridge is on the priority list for repair or replacement.

Inspections in MO are conducted by certified engineers from the state Department of Transportation on a 24-month cycle, and results are reported back to the FHWA each spring. The list below shows every NBI-tracked bridge in the county, sorted by inventory load rating. Use the “Sort by” controls to surface the lowest-rated spans first, and click any row for full inspection history, traffic counts, and condition trends.

Source: FHWA National Bridge Inventory. See methodology for full definitions.

411

Total Bridges

30.2%

Good

3.4%

Poor

3.4%

Structurally Deficient

Condition Distribution

Good

30.2% (124)

Fair

51.1% (210)

Poor

3.4% (14)

SD

3.4% (14)

All Bridges (411)

Sort:

OLD HWY 21 S

Over: RT M

S 18 T 42 N R 5 E, Jefferson, MO

Built 1995 ADT: 6,237

RT A E

Over: IS 55

S 194 T 40 N R 6 E, Jefferson, MO

Built 1999 ADT: 33,707

MO 21 N

Over: CRD KLABLE RD

S 31 T 42 N R 5 E, Jefferson, MO

Built 2000 ADT: 118

MO 21 S

Over: CRD KLABLE RD

S 31 T 42 N R 6 E, Jefferson, MO

Built 2000 ADT: 118

MO 141 S

Over: IS 55

S 2991 T 43 N R 6 E, Jefferson, MO

Built 2001 ADT: 52,440

CHURCH RD E

Over: IS 55

S 2991 T 43 N R 6 E, Jefferson, MO

Built 2001 ADT: 52,440

US 61 S

Over: IS 55

S 1906 T 40 N R 6 E, Jefferson, MO

Built 1969 ADT: 16,639

RT AA E

Over: IS 55

S 2 T 39 N R 6 E, Jefferson, MO

Built 1970 ADT: 13,411

DANBY RD E

Over: IS 55

S 12 T 39 N R 6 E, Jefferson, MO

Built 1970 ADT: 13,348

RT TT S

Over: IS 55

S 2078 T 39 N R 7 E, Jefferson, MO

Built 1970 ADT: 13,348

IS 55 S

Over: US 61

S 28 T 40 N R 6 E, Jefferson, MO

Built 1969 ADT: 2,403

IS 55 N

Over: US 61

S 28 T 40 N R 6 E, Jefferson, MO

Built 1969 ADT: 2,403

MO 110 E

Over: US 67

S 4 T 39 N R 5 E, Jefferson, MO

Built 1975 ADT: 14,763

MO 141 S

Over: MO 21

S 664 T 43 N R 5 E, Jefferson, MO

Built 1976 ADT: 16,242

RT A E

Over: CRD STATE HWY 21A OLD

S 910 T 40 N R 5 E, Jefferson, MO

Built 1974 ADT: 464

MO 21 S

Over: CRD OLD HWY 21

S 32 T 43 N R 5 E, Jefferson, MO

Built 1987 ADT: 8,287

MO 21 N

Over: CRD OLD HWY 21

S 5 T 42 N R 5 E, Jefferson, MO

Built 1987 ADT: 5,346

WEST FOUR RIDGE RD

Over: MO 21

S 7 T 42 N R 5 E, Jefferson, MO

Built 1988 ADT: 10,855

MO 21 S

Over: CRD HEADS CREEK RD

S 19 T 42 N R 5 E, Jefferson, MO

Built 1990 ADT: 148

MO 21 N

Over: CRD HEADS CREEK RD

S 19 T 42 N R 5 E, Jefferson, MO

Built 1990 ADT: 148

MO 21 N

Over: CRD OLD HWY 21

S 197 T 43 N R 5 E, Jefferson, MO

Built 1987 ADT: 11,228

MO 21 S

Over: CRD OLD HWY 21

S 1974 T 43 N R 5 E, Jefferson, MO

Built 1987 ADT: 11,228

OLD HWY 21 S

Over: MO 21

S 30 T 42 N R 5 E, Jefferson, MO

Built 1996 ADT: 9,759

MO 21 S

Over: OR 21

S 22 T 43 N R 5 E, Jefferson, MO

Built 1978 ADT: 5,752

MO 21 N

Over: CRD LONEDELL RD

S 22 T 43 N R 5 E, Jefferson, MO

Built 1987 ADT: 1,693

MO 21 S

Over: CRD LONEDELL RD

S 22 T 43 N R 5 E, Jefferson, MO

Built 1987 ADT: 1,693

OLD HWY 21 S

Over: MO 21

S 27 T 43 N R 5 E, Jefferson, MO

Built 1987 ADT: 11,430

WEST ROCK CREEK RD

Over: MO 21

S 28 T 43 N R 5 E, Jefferson, MO

Built 1987 ADT: 11,430

IMPERIAL MAIN ST E

Over: IS 55

S 17 T 42 N R 6 E, Jefferson, MO

Built 2003 ADT: 52,260

RT V S

Over: US 67

S 5 T 38 N R 5 E, Jefferson, MO

Built 2003 ADT: 12,975

MO 21 N

Over: RT BB

S 33 T 41 N R 4 E, Jefferson, MO

Built 2003 ADT: 1,707

MO 21 S

Over: RT BB

S 33 T 41 N R 4 E, Jefferson, MO

Built 2003 ADT: 1,707

RT A E

Over: MO 21

S 34 T 41 N R 4 E, Jefferson, MO

Built 2003 ADT: 8,809

OLD HWY 21 S

Over: MO 21

S 2 T 41 N R 4 E, Jefferson, MO

Built 2007 ADT: 8,192

GLADE CHAPEL RD E

Over: MO 21

S 12 T 41 N R 4 E, Jefferson, MO

Built 2007 ADT: 8,809

MO 21 N

Over: CRD HAYDEN RD

S 23 T 41 N R 4 E, Jefferson, MO

Built 2007 ADT: 102

MO 21 S

Over: CRD HAYDEN RD

S 23 T 41 N R 4 E, Jefferson, MO

Built 2007 ADT: 102

IS 55 N

Over: RT M

S 747 T 42 N R 6 E, Jefferson, MO

Built 2010 ADT: 6,895

IS 55 S

Over: RT M

S 25 T 42 N R 6 E, Jefferson, MO

Built 2010 ADT: 21,406

IS 55 S

Over: CST FIFTH ST

S 416 T 40 N R 6 E, Jefferson, MO

Built 2011 ADT: 3,218

RT H E

Over: CRD CALICO RD

S 30 T 40 N R 3 E, Jefferson, MO

Built 1992 ADT: 230

RT M E

Over: CRD OLD LEMAY FERRY RD

S 21 T 42 N R 5 E, Jefferson, MO

Built 1996 ADT: 1,810

RT M W

Over: CRD OLD LEMAY FERRY RD

S 21 T 42 N R 5 E, Jefferson, MO

Built 1996 ADT: 1,765

MO 21 N

Over: RT M

S 18 T 42 N R 5 E, Jefferson, MO

Built 1997 ADT: 6,617

MO 21 S

Over: RT M

S 18 T 42 N R 5 E, Jefferson, MO

Built 1997 ADT: 6,617

RT M E

Over: CRD OLD HWY M

S 20 T 42 N R 5 E, Jefferson, MO

Built 1996 ADT: 1,191

RT M W

Over: CRD OLD HWY M

S 20 T 42 N R 5 E, Jefferson, MO

Built 1996 ADT: 1,270

RP RICHARDSON RD T

Over: IS 55

S 31 T 43 N R 6 E, Jefferson, MO

Built 1996 ADT: 50,028

RICHARDSON RD E

Over: IS 55

S 31 T 43 N R 6 E, Jefferson, MO

Built 1996 ADT: 62,016

IS 55 S

Over: CST CENTRAL AVE

S 416 T 40 N R 6 E, Jefferson, MO

Built 1966 ADT: 2,327

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

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Data sourced from official U.S. government datasets. See our methodology for details. Retrieved and formatted by PlainBridges Editorial

Reviewed byPlainbridges Editorial, Plain Bridges Editorial Team · June 5, 2026