Lyon County, KS

493 public highway bridges

Lyon County Bridge Snapshot

Lyon County, Kansas contains 493 public highway bridges in the FHWA National Bridge Inventory. Roughly 59.6% are rated “Good,” 31.2% “Fair,” 1% “Poor,” and 1% 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 KS 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.

493
Total Bridges
59.6%
Good
1%
Poor
1%
Structurally Deficient

Condition Distribution

Good
59.6% (294)
Fair
31.2% (154)
Poor
1% (5)
SD
1% (5)

All Bridges (493)

RD 290 927.2-496.0

Fair

Over: WRIGHTS CREEK

1.8E OF DUNLAP, Lyon, KS

Built 1953 Load: 20.0 t ADT: 92

RD 180 (D.0-22.0)

Fair

Over: LUDY CREEK

0.5N 1.8E OF PLYMOUTH, Lyon, KS

Built 1987 Load: 20.0 t ADT: 35

Rd 330 (G.3-7.0)

Fair

Over: STREAM

0.5S 1.0E OF BUSHONG, Lyon, KS

Built 1940 Load: 20.0 t ADT: 20

I335 (KTA)EL-WL

Fair

Over: DUCK CREEK

1.60 MI NE K-99, Lyon, KS

Built 1955 Load: 20.0 t ADT: 5,450

RD 502 969-502

Fair

Over: MARIAS DES CYGNES

0.5E 1.0N OF READING, Lyon, KS

Built 1963 Load: 20.2 t ADT: 30

RS 412 F.1-24.8

Fair

Over: COTTONWOOD RIVER

4.5W 2.0S OF EMPORIA, Lyon, KS

Built 1967 Load: 20.3 t ADT: 347

RS 1078 A.9-26.0

Fair

Over: STREAM

3.5S 0.5W OF PLYMOUTH, Lyon, KS

Built 1974 Load: 20.3 t ADT: 84

RD B5 (B.5-22.9)

Fair

Over: BEAVER CREEK

6.9S 3.5W OF AMERICUS, Lyon, KS

Built 1940 Load: 20.4 t ADT: 20

COUNTY RD. L

Fair

Over: STREAM

4.3N OF ALLEN, Lyon, KS

Built 1953 Load: 21.3 t ADT: 25

RD 180 (T.3-180)

Fair

Over: BADGER CREEK

3.0W 3.0N OF NEOSHO, Lyon, KS

Built 1940 Load: 21.4 t ADT: 20

RD 145 963.2-524.5

Fair

Over: NEOSHO RIVER

0.5W OF NEOSHO RAPIDS, Lyon, KS

Built 1940 Load: 21.8 t ADT: 152

US56 HWY

Fair

Over: ELM CREEK DRAINAGE

0.77 MI E KTA, Lyon, KS

Built 1931 Load: 21.8 t ADT: 580

RS 151 M.4-75.0

Fair

Over: STREAM

1.0E 0.5N OF OLPE, Lyon, KS

Built 1949 Load: 22.7 t ADT: 360

RS 415 K.0-11.9

Fair

Over: STREAM

6.0S OF ALLEN, Lyon, KS

Built 1949 Load: 22.7 t ADT: 260

CTY RD L 945-482.5

Fair

Over: STREAM

1.0N OF ALLEN, Lyon, KS

Built 1934 Load: 22.7 t ADT: 25

RS 1120 25-C.3

Fair

Over: CAMP CREEK

4.5S 8.0W OF OLPE, Lyon, KS

Built 1938 Load: 22.7 t ADT: 9

CTY RD. 210

Fair

Over: PLUMB CREEK

2.0W OF LANG, Lyon, KS

Built 1972 Load: 22.7 t ADT: 206

RD. 370 961.0-480

Fair

Over: LOG CABIN CREEK

4.0N 4.0E OF ADMIRE, Lyon, KS

Built 1931 Load: 22.7 t ADT: 70

RD. A (A.0-3.4)

Fair

Over: ROCK CREEK

3.0N 5.0W OF BUSHONG, Lyon, KS

Built 1975 Load: 22.7 t ADT: 80

RD 180 (A.3-22.0)

Fair

Over: BEAVER CREEK

4.7W 6.0S OF AMERICUS, Lyon, KS

Built 1969 Load: 22.7 t ADT: 10

RD B 927.0-500.1

Fair

Over: NEOSHO RIVER

3.0N 4.0W OF AMERICUS, Lyon, KS

Built 1916 Load: 22.7 t ADT: 30

RD 190 929.1-576

Fair

Over: LINCK CREEK

3.0W 5.0S OF AMERICUS, Lyon, KS

Built 1972 Load: 22.7 t ADT: 50

RD 260 931.9-502.0

Fair

Over: TROUBLESOME CREEK

2.0N 1.0W OF AMERICUS, Lyon, KS

Built 1930 Load: 22.7 t ADT: 20

RD E (E.0-19.7)

Fair

Over: STREAM

4.0S 1.0W OF AMERICUS, Lyon, KS

Built 1934 Load: 22.7 t ADT: 30

RD G 937.0-496.1

Fair

Over: STREAM

5.0N 1.0E OF AMERICUS, Lyon, KS

Built 1938 Load: 22.7 t ADT: 20

RD G 937-520.5

Fair

Over: STREAM

4.8E 1.0S OF PLYMOUTH, Lyon, KS

Built 1930 Load: 22.7 t ADT: 20

CITY RD. 400

Fair

Over: STREAM

5.5N 3.0W OF ALLEN, Lyon, KS

Built 1940 Load: 22.7 t ADT: 50

RD 50 937.9-544.0

Fair

Over: MOON BRANCH CREEK

2.0S 3.5W OF OLPE, Lyon, KS

Built 1964 Load: 22.7 t ADT: 20

RD 280 (N.0-280)

Fair

Over: STREAM

4.0N 7.0E OF AMERICUS, Lyon, KS

Built 1927 Load: 22.7 t ADT: 10

RD. N 949.0-510.6

Fair

Over: TAYLOR CREEK

2.5S 7.0E OF AMERICUS, Lyon, KS

Built 1930 Load: 22.7 t ADT: 20

RD 20 949.3-550.0

Fair

Over: TATE BRANCH CREEK

5.0S 1.5E OF OLPE, Lyon, KS

Built 1926 Load: 22.7 t ADT: 30

RD 230 951.5-508.0

Fair

Over: PLUMB CREEK

2.0S 8.0W OF READING, Lyon, KS

Built 1938 Load: 22.7 t ADT: 20

RD 100 951.7-534.0

Fair

Over: COOL CREEK

3.4E 3.0N OF OLPE, Lyon, KS

Built 1930 Load: 22.7 t ADT: 20

RD 90 955.6-536.0

Fair

Over: STREAM

5.9W 1.5S OF HARTFORD, Lyon, KS

Built 1930 Load: 22.7 t ADT: 30

RD T 957.0-544.5

Fair

Over: STREAM

2.5S 5.7E OF OLPE, Lyon, KS

Built 1939 Load: 22.7 t ADT: 10

RD V6 961.5-482.4

Fair

Over: STREAM

2.0N 4.5E OF ADMIRE, Lyon, KS

Built 1930 Load: 22.7 t ADT: 30

RD. W 963.0-548.3

Fair

Over: STREAM

7.3S 3.0W OF HARTFORD, Lyon, KS

Built 1937 Load: 22.7 t ADT: 10

RD. Y 967.0-476.4

Fair

Over: STREAM

5.0N 7.0E OF ADMIRE, Lyon, KS

Built 1946 Load: 22.7 t ADT: 20

RD Y 967.0-504.6

Fair

Over: STREAM

0.5W 0.6S OF READING, Lyon, KS

Built 1924 Load: 22.7 t ADT: 30

W. 6TH AVE.

Fair

Over: STREAM

5.4E 0.5S OF PLYMOUTH, Lyon, KS

Built 1930 Load: 22.7 t ADT: 50

RS 1122 U.2-60.0

Fair

Over: STREAM

1.0S 7.0E OF OLPE, Lyon, KS

Built 1950 Load: 22.8 t ADT: 66

RD 10 939.9-552.0

Fair

Over: TRIB. TO VERDIGRIS RIVER

6.0S 2.5W OF OLPE, Lyon, KS

Built 1936 Load: 22.8 t ADT: 54

RD 20 933.1-550.0

Fair

Over: FAWN CREEK

6.1W 5.0S OF OLPE, Lyon, KS

Built 1953 Load: 22.9 t ADT: 80

RS 1117 Y.4-246.0

Fair

Over: MUD CREEK

0.2S OF READING, Lyon, KS

Built 1975 Load: 23.7 t ADT: 53

RD. 370 967-480

Fair

Over: SALT CREEK

4.0N 1.5E OF MILLER, Lyon, KS

Built 1975 Load: 23.9 t ADT: 211

LOCAL RD. (Y-260)

Fair

Over: DUCK CREEK

0.25W 1.0N OF READING, Lyon, KS

Built 1979 Load: 24.5 t ADT: 30

N7 949.9-482.5

Fair

Over: STREAM

2.0N 0.5W OF ADMIRE, Lyon, KS

Built 1934 Load: 25.0 t ADT: 20

RS 1121 30.0-W.7

Fair

Over: STREAM

7.0S 2.0W OF HARTFORD, Lyon, KS

Built 1939 Load: 25.1 t ADT: 56

RS 1508 U.0-180

Fair

Over: TRIB. TO BADGER CREEK

3W, 3N OF NEOSHO RAPIDS, Lyon, KS

Built 1980 Load: 25.1 t ADT: 210

US56 HWY

Fair

Over: 142 MILE CREEK DRAINAGE

0.67 MI E K99, Lyon, KS

Built 1931 Load: 25.4 t ADT: 815

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