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)

Sort:

PRAIRIE ST

Over: I-35 HIGHWAY

1.27 MI E GRAPHIC ARTS RD, Lyon, KS

Built 1965 ADT: 11,643

I-35 HWY NB

Over: RS2066, US50 HWY

2.57 MI EAST OF K-99, Lyon, KS

Built 1967 ADT: 3,860

1-35 HWY SB

Over: US-50 HWY

JCT US 50/I35, Lyon, KS

Built 1956 ADT: 13,195

CENTER TWNSP RD

Over: I-35 HWY (KTA)

1.76 MI NE CHASE CO LINE, Lyon, KS

Built 1956 ADT: 8,419

PIKE TOWNSHIP ROAD

Over: I-35 HWY (KTA)

4.26 MI NE CHASE CO LINE, Lyon, KS

Built 1956 ADT: 8,419

RS1078

Over: I-35 HWY (KTA)

6.41 MI NE CHASE CO LINE, Lyon, KS

Built 1956 ADT: 8,419

I-35 HWY NB (KTA)

Over: US-50 HIGHWAY

JCT I-35 / US-50, Lyon, KS

Built 1956 ADT: 13,195

I-35 HWY SB

Over: RS2066, US50 HWY

2.60 MI EAST OF K-99, Lyon, KS

Built 1976 ADT: 3,860

RS1508

Over: I35 HWY N&S LANES

5.82 MI EAST OF K-99, Lyon, KS

Built 1976 ADT: 8,287

County Rd U

Over: I-35 HIGHWAY

7.82 MI EAST OF K-99, Lyon, KS

Built 1976 ADT: 8,820

RS2066

Over: I35 HWY N&S LANE

1.11 MI E-JCT I35&K130, Lyon, KS

Built 1976 ADT: 7,344

URB1105, INDUST

Over: I-35 HWY

0.64 MI E GRAPHIC ARTS RD, Lyon, KS

Built 1994 ADT: 7,154

I-35 RAMP (KTA)

Over: US-50 HWY

I-35 RAMP OVER US-50, Lyon, KS

Built 2009 ADT: 13,195

I-35 HWY (KTA)

Over: I-335 HWY (KTA)

I-35, KTA, EMPORIA INTC, Lyon, KS

Built 2009 ADT: 5,351

GRAPHIC ARTS ROAD

Over: I-35 HIGHWAY & RAMPS

JCT GRAPHIC ARTS RD/I35, Lyon, KS

Built 2010 ADT: 7,154

K99 HWY

Over: I-35 HIGHWAY

JCT K99/I35, Lyon, KS

Built 1966 ADT: 8,650

K99 HWY

Over: I-335 HWY (KTA)

4.61 MI N OF I-35 JCT, Lyon, KS

Built 1956 ADT: 5,351

K99 HWY

Over: I-335 HWY (KTA)

7.09 MI N OF I-35 JCT, Lyon, KS

Built 1956 ADT: 5,351

K99 HWY

Over: I-335 HWY (KTA)

K-99 & KTA N JCT, Lyon, KS

Built 1956 ADT: 5,351

PEDESTRIAN BRIDGE

Over: K99 HWY

0.75 MI S OF US-56 JCT, Lyon, KS

Built 1936 ADT: 700

GRAPHIC ARTS RD

Over: I-335 HWY (KTA)

1.23 MI NE EMPORIA IC, Lyon, KS

Built 1956 ADT: 5,351

LOCAL ROAD

Over: I-335 HWY (KTA)

4.27 MI NE US-50, Lyon, KS

Built 1956 ADT: 5,351

LOCAL ROAD

Over: I-335 HWY (KTA)

5.36 MI NE US-50, Lyon, KS

Built 1956 ADT: 5,351

LOCAL ROAD

Over: I-335 HWY (KTA)

2.15 MI NE MID JGT K99, Lyon, KS

Built 1956 ADT: 5,351

LOCAL ROAD

Over: I-335 HWY (KTA)

4.72 MI E-MID JCT K99, Lyon, KS

Built 1956 ADT: 5,351

LOCAL ROAD

Over: I-335 HWY (KTA)

4.72 MI NE MJCT K99, Lyon, KS

Built 1956 ADT: 5,351

LOCAL ROAD

Over: I-335 HWY (KTA)

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

Built 1956 ADT: 5,351

LOCAL ROAD

Over: I-335 HWY (KTA)

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

Built 1956 ADT: 5,351

LOCAL ROAD

Over: I-335 HWY (KTA)

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

Built 1956 ADT: 5,351

LOCAL ROAD

Over: I-335 HWY (KTA)

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

Built 1956 ADT: 5,351

RP TO & FROM KTA

Over: I-335 HWY (KTA)

INTERCHANGE US-56 / KTA, Lyon, KS

Built 1956 ADT: 5,508

LOCAL ROAD

Over: I-335 HWY (KTA)

1.83 MI NE US-56, Lyon, KS

Built 1956 ADT: 5,508

RS0416

Over: I-335 HWY (KTA)

3.81 MI NE US-56, Lyon, KS

Built 1956 ADT: 5,508

HARVEYVILLE ROAD

Over: I-335 HWY (KTA)

4.93 MI NE US-56, Lyon, KS

Built 1956 ADT: 5,508

LOCAL ROAD

Over: I-335 HWY (KTA)

6.36 MI NE US-56, Lyon, KS

Built 1956 ADT: 5,508

LOCAL ROAD

Over: I-335 HWY (KTA)

7.56 MI NE US-56, Lyon, KS

Built 1956 ADT: 5,508

I-335 HWY (KTA) SB

Over: US-56 HWY

JCT US-56 / KTA, Lyon, KS

Built 1956 ADT: 600

I-335 HWY (KTA) NB

Over: US-56 HWY

JCT US-56 / KTA, Lyon, KS

Built 1956 ADT: 600

18 ST W EMP OV KTA

Over: I-335 KTA

0.33 MI NE EMP KTA IC, Lyon, KS

Built 2010 ADT: 5,351

LOCAL ROAD

Over: I-335 HWY (KTA)

1.43 MI NE EMPORIA IC, Lyon, KS

Built 2006 ADT: 5,351

COUNTY ROAD 130

Over: PLUM CREEK

2.7 MI NNW OF HQ, Lyon, KS

Built 1935 Load: 4.5 t ADT: 25

RD 75 961.9-538.5

Over: STREAM

3.0S 3.0W OF HARTFORD, Lyon, KS

Built 1932 Load: 5.5 t ADT: 10

RD 220 945.4-510

Over: DOW CREEK

2.0S 5.5E OF AMERICUS, Lyon, KS

Built 1981 Load: 6.5 t ADT: 50

RD J (J-215)

Over: TROUBLESOME CREEK

3.5S 3.0E OF AMERICUS, Lyon, KS

Built 1968 Load: 6.9 t ADT: 150

RD C 929-484.7

Over: BLUFF CREEK

1.0N 3.0W OF BUSHONG, Lyon, KS

Built 1975 Load: 7.8 t ADT: 20

RD 190 (M.9-21.0)

Over: PLUMB CREEK

8.5W 6.0S OF READING, Lyon, KS

Built 1980 Load: 9.1 t ADT: 60

MINOR COL V.0-266

Over: DUCK CREEK

1.5N 3.5W OF READING, Lyon, KS

Built 1981 Load: 9.1 t ADT: 50

RD 150 965.6-524.0

Over: PLUM CREEK

0.8E OF NEOSHO RAPIDS, Lyon, KS

Built 1940 Load: 9.1 t ADT: 60

RD 270 (U.0-270)

Over: DUCK CREEK

6.0S 3.0E OF ADMIRE, Lyon, KS

Built 1968 Load: 9.4 t ADT: 30

RD K (K.0-197)

Over: ALLEN CREEK

4.0S 4.0E OF AMERICUS, Lyon, KS

Built 1979 Load: 10.0 t ADT: 50

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