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 330 939.4-488.0

Fair

Over: STREAM

1.0S 2.5W OF ALLEN, Lyon, KS

Built 1940 Load: 10.7 t ADT: 10

RD 110 943.9-532

Fair

Over: STREAM

2.2N OF OLPE, Lyon, KS

Built 1933 Load: 10.7 t ADT: 20

Rd T 958-538

Fair

Over: EAGLE CREEK

5.7E 1.1N OF OLPE, Lyon, KS

Built 1976 Load: 11.1 t ADT: 44

RD 150 933.5-524.0

Fair

Over: STREAM

2.5S 3.0E OF PLYMOUTH, Lyon, KS

Built 1984 Load: 11.3 t ADT: 30

RD. H 939.0-548.8

Fair

Over: ROCK CREEK

3.2W 4.8S OF OLPE, Lyon, KS

Built 1953 Load: 11.9 t ADT: 80

RD. P 951.0-482.8

Fair

Over: 142 MILE CREEK

2.0N 0.5W OF ADMIRE, Lyon, KS

Built 1940 Load: 12.0 t ADT: 20

RD. H 939.0-524.8

Fair

Over: FLOWER CREEK

2.0S OF EMPORIA, Lyon, KS

Built 1926 Load: 12.3 t ADT: 50

RD 270 937.9-500.0

Fair

Over: ALLEN CREEK

3.0N 2.0E OF AMERICUS, Lyon, KS

Built 1968 Load: 12.4 t ADT: 80

RD 145 933.5-524.5

Fair

Over: PHENIS CREEK

3.0E 3.0S OF PLYMOUTH, Lyon, KS

Built 1940 Load: 12.9 t ADT: 20

LOCAL RD H (H-330)

Fair

Over: STREAM

1.0S 3.0W OF ALLEN, Lyon, KS

Built 1968 Load: 12.9 t ADT: 50

RS 1122 Y.5-60.0

Fair

Over: FOUR MILE CREEK

4.0S 0.5W OF HARTFORD, Lyon, KS

Built 1950 Load: 13.2 t ADT: 66

RD. M (M.0-375)

Fair

Over: STREAM

3.0N 1.0E OF ALLEN, Lyon, KS

Built 1957 Load: 13.3 t ADT: 50

RD 380 (M.0-380)

Fair

Over: 142 MILE CREEK

1.2E 4.0N OF ALLEN, Lyon, KS

Built 1957 Load: 13.3 t ADT: 80

RS 412 F.0-15.1

Fair

Over: PESTER CREEK

0.5N OF AMERICUS, Lyon, KS

Built 1938 Load: 13.6 t ADT: 2,599

BURLINGAME RD

Fair

Over: STREAM

2.1N 1.5E OF EMPORIA, Lyon, KS

Built 1957 Load: 13.6 t ADT: 1,255

RD 290 939.4-496.0

Fair

Over: STREAM

5.0S 2.5W OF ALLEN, Lyon, KS

Built 1923 Load: 13.6 t ADT: 46

RS 1118 T-130.5

Fair

Over: STREAM

3.0N 5.5W OF HARTFORD, Lyon, KS

Built 1926 Load: 13.6 t ADT: 45

RS 1121 30.0-Y.3

Fair

Over: STREAM

7.0S 0.7W OF HARTFORD, Lyon, KS

Built 1936 Load: 13.6 t ADT: 125

LOCAL RD. H.7-23.5

Fair

Over: STREAM

AT EMPORIA, Lyon, KS

Built 1930 Load: 13.6 t ADT: 50

RD. A (A.0-1.1)

Fair

Over: STREAM

5.0N 5.0W OF BUSHONG, Lyon, KS

Built 1938 Load: 13.6 t ADT: 20

RD 190 (E.7-21.0)

Fair

Over: STREAM

5.0S OF AMERICUS, Lyon, KS

Built 1957 Load: 13.6 t ADT: 50

RD. J 941.0-532.6

Fair

Over: COAL CREEK

2.3W 3.4N OF OLPE, Lyon, KS

Built 1927 Load: 13.6 t ADT: 20

RD T (T.0-285)

Fair

Over: DUCK CREEK

5.5W 3.5N OF READING, Lyon, KS

Built 1950 Load: 13.6 t ADT: 30

RD. U 959.0-538.5

Fair

Over: EAGLE CREEK

4.5W 3.0S OF HARTFORD, Lyon, KS

Built 1930 Load: 13.6 t ADT: 20

RS 1505 E.4-35.0

Fair

Over: ROCK CREEK

2.0S 6.0W OF OLPE, Lyon, KS

Built 1958 Load: 14.0 t ADT: 50

RD. U 959.0-542.3

Fair

Over: STREAM

5.0W 4.8S OF HARTFORD, Lyon, KS

Built 1940 Load: 14.3 t ADT: 50

RD M (947-512.5)

Fair

Over: TAYLOR CREEK

3.5S 6.0E OF AMERICUS, Lyon, KS

Built 1926 Load: 14.7 t ADT: 30

RD. R 953-536.9

Fair

Over: STREAM

1.0N 3.7E OF OLPE, Lyon, KS

Built 1959 Load: 14.7 t ADT: 60

LOCAL RD. H

Fair

Over: STREAM

2.0S 3.0W OF ALLEN, Lyon, KS

Built 1940 Load: 14.9 t ADT: 10

RD 320 929.8-490.0

Fair

Over: STREAM

1.5S 2.0W OF BUSHONG, Lyon, KS

Built 1940 Load: 15.0 t ADT: 10

M AVE./RD. 390

Fair

Over: STREAM

5.5N 5.0W OF BUSHONG, Lyon, KS

Built 1940 Load: 15.6 t ADT: 50

RD. C 929.0-548.4

Fair

Over: CAMP CREEK

8.2W 4.4S OF OLPE, Lyon, KS

Built 1958 Load: 15.6 t ADT: 80

LCL RD. Y.6-245

Fair

Over: MUD CREEK

S. EDGE OF READING, Lyon, KS

Built 1970 Load: 15.9 t ADT: 20

RS 416 X.0-265.0

Fair

Over: DUCK CREEK

1.5W 1.5N OF READING, Lyon, KS

Built 1970 Load: 16.2 t ADT: 51

RS 1078 23.6-A.0

Fair

Over: COTTONWOOD RIVER

1.0S 1.5W OF PLYMOUTH, Lyon, KS

Built 1961 Load: 16.3 t ADT: 110

I-35HWY

Fair

Over: LINCOLN ST

1.78 MI E GRAPHIC ARTS RD, Lyon, KS

Built 1965 Load: 16.3 t ADT: 10,700

LOCAL RD Y.5-280

Fair

Over: MARAIS DES CYGNES RIVER

3.0N OF READING, Lyon, KS

Built 1940 Load: 16.9 t ADT: 10

RS 416 T.7-7.6

Fair

Over: ELM CREEK

0.5S OF MILLER, Lyon, KS

Built 1970 Load: 17.0 t ADT: 152

LOCAL RD W - 265.0

Fair

Over: DUCK CREEK

2.5W 1.6N OF READING, Lyon, KS

Built 1987 Load: 17.1 t ADT: 20

RD 370 (U-370)

Fair

Over: ONION CREEK

4.0N 3.4E OF ADMIRE, Lyon, KS

Built 1954 Load: 17.6 t ADT: 70

RD 370 (S-370)

Fair

Over: ELM CREEK

4.0N 1.0E OF ADMIRE, Lyon, KS

Built 1959 Load: 17.7 t ADT: 60

RD 170 963.7-520.0

Fair

Over: DRY CREEK

2.0N OF NEOSHO RAPIDS, Lyon, KS

Built 1923 Load: 18.0 t ADT: 50

I-335 HWY (KTA) SB

Fair

Over: ABAN. RR, ROCK RD. BIKE

4.91 MI NE N JCT K-99, Lyon, KS

Built 1956 Load: 18.1 t ADT: 5,450

RD 120 951.5-530

Fair

Over: COAL CREEK

3.0E 4.5N OF OLPE, Lyon, KS

Built 1974 Load: 18.3 t ADT: 80

RS 1078 26.0-E.6

Fair

Over: PHEANIS CREEK

3.5S 3.5E OF PLYMOUTH, Lyon, KS

Built 1955 Load: 18.6 t ADT: 84

RD. 110 943.2-532

Fair

Over: STREAM

4.0N 0.8W OF OLPE, Lyon, KS

Built 1954 Load: 18.9 t ADT: 50

RD 290 (11.0-G.8)

Fair

Over: ALLEN CREEK

1.0S 3.0W OF ALLEN, Lyon, KS

Built 1948 Load: 19.3 t ADT: 46

RD. D 931.0-518.9

Fair

Over: LINCK CREEK

6.9S 2.0W OF AMERICUS, Lyon, KS

Built 1925 Load: 19.6 t ADT: 80

RD. 370 957.9-480

Fair

Over: CHICKEN CREEK

4.0N 3.0E OF ADMIRE, Lyon, KS

Built 1959 Load: 19.9 t ADT: 65

RD 330 (N.1-7.0)

Fair

Over: HILL CREEK

0.5W OF ADMIRE, Lyon, KS

Built 1930 Load: 19.9 t ADT: 20

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

Related

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