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 U U-110.5

Good

Over: STREAM

4.0W 1.0N OF HARTFORD, Lyon, KS

Built 1990 Load: 34.7 t ADT: 15

RD 20 941.5-550.0

Good

Over: MOON BRANCH CREEK

5.0S 2.0W OF OLPE, Lyon, KS

Built 1987 Load: 34.8 t ADT: 40

I-35 HWY SB (KTA)

Good

Over: BNSF RAILWAY (3 TRACKS)

9.70 MI NE CHASE CO LINE, Lyon, KS

Built 1956 Load: 34.9 t ADT: 8,600

I-35 HWY NB (KTA)

Good

Over: BNSF RAILWAY (3 TRACKS)

9.71 MI NE CHASE CO LINE, Lyon, KS

Built 1956 Load: 34.9 t ADT: 8,600

I-335 HWY (KTA) SB

Good

Over: NEOSHO RIVER

2.22 MI NE US-50, Lyon, KS

Built 1956 Load: 35.0 t ADT: 5,450

I-335 HWY (KTA) NB

Good

Over: NEOSHO RIVER

2.21 MI NE US-50, Lyon, KS

Built 1956 Load: 35.0 t ADT: 5,450

RS 151 4.7-75

Good

Over: EAGLE CREEK

6.5E 0.5N OF OLPE, Lyon, KS

Built 1994 Load: 35.4 t ADT: 255

I-35 HWY SB (KTA)

Good

Over: 6TH ST-EMPORIA

0.47 MI SW US-50, Lyon, KS

Built 1956 Load: 35.4 t ADT: 8,600

I-35 HWY NB (KTA)

Good

Over: 6TH ST-EMPORIA

0.47 MI SW US-50, Lyon, KS

Built 1956 Load: 35.4 t ADT: 8,600

RS 414 K.9-21.5

Good

Over: NEOSHO RIVER

1.7N 1.3E OF EMPORIA, Lyon, KS

Built 1992 Load: 35.7 t ADT: 1,255

I-35 HWY SB

Good

Over: NEOSHO RIVER

3.69 MI EAST OF K-99, Lyon, KS

Built 1976 Load: 36.3 t ADT: 8,350

RD. A (A.0-2.8)

Good

Over: STREAM

4.0N 5.0W OF BUSHONG, Lyon, KS

Built 1994 Load: 36.7 t ADT: 50

SOUTH AVENUE

Good

Over: CHANNEL

0.1E OF SOUTH & PRAIRIE, Lyon, KS

Built 1990 Load: 36.8 t ADT: 6,000

RD N7 949.8-530.2

Good

Over: STREAM

2.0E 4.4N OF OLPE, Lyon, KS

Built 1991 Load: 37.0 t ADT: 10

RS 413 I.0-16.0

Good

Over: ALLEN CREEK

3.0E OF AMERICUS, Lyon, KS

Built 1998 Load: 37.1 t ADT: 100

US-56 HIGHWAY

Good

Over: BLUFF CREEK

2.64 MI E MORRIS COLN, Lyon, KS

Built 2002 Load: 37.2 t ADT: 1,470

RD 330 955.7-488.0

Good

Over: 142 Mile Creek

2.0E of Admire, Lyon, KS

Built 2012 Load: 37.6 t ADT: 10

RD 120 (T.9-120.0)

Good

Over: STREAM

5.0N 6.9E OF OLPE, Lyon, KS

Built 1991 Load: 37.6 t ADT: 25

I-335 HWY (KTA) SB

Good

Over: HILL CREEK

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

Built 1956 Load: 37.6 t ADT: 5,450

I-335 HWY (KTA) NB

Good

Over: HILL CREEK

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

Built 1956 Load: 37.6 t ADT: 5,450

LOGAN AVE L.5-25.0

Good

Over: MENU FOODS LAKE SPILLWAY

LOGAN AVE & WARREN WAY, Lyon, KS

Built 1999 Load: 37.8 t ADT: 60

S-69.5 953.9-540.0

Good

Over: SOUTH EAGLE CREEK

4.3E OF OLPE, Lyon, KS

Built 1988 Load: 38.0 t ADT: 10

I-35 HWY SB

Good

Over: Country Road - R1

4.93 MI EAST OF K-99, Lyon, KS

Built 1976 Load: 38.1 t ADT: 8,150

I-35 HWY NB

Good

Over: County Road R1

4.94 MI EAST OF K-99, Lyon, KS

Built 1976 Load: 38.1 t ADT: 8,150

I-35 HWY NB

Good

Over: DRY CREEK

10.58 MI E OF K-99, Lyon, KS

Built 1976 Load: 38.1 t ADT: 8,050

I-35 HWY SB

Good

Over: DRY CREEK

10.59 MI E OF K-99, Lyon, KS

Built 1976 Load: 38.1 t ADT: 8,050

I-35 HWY NB

Good

Over: ROUNDABOUT

I-35 KTA EMPORIA INTC, Lyon, KS

Built 2010 Load: 38.2 t ADT: 6,800

I-35 HWY SB

Good

Over: ROUNDABOUT

I-35 KTA EMPORIA INTC, Lyon, KS

Built 2010 Load: 38.2 t ADT: 6,850

RS 1078 H.6-26.0

Good

Over: DRY CREEK

3.0S 2.0W OF EMPORIA, Lyon, KS

Built 1988 Load: 38.5 t ADT: 84

RS 2139 L.0-25.1

Good

Over: COTTONWOOD RIVER

8.0N 1.0E OF OLPE, Lyon, KS

Built 1989 Load: 38.6 t ADT: 400

K99 HWY

Good

Over: DRY CREEK

3.17 MI S US50, Lyon, KS

Built 1987 Load: 39.0 t ADT: 3,850

IBP ACCESS RD.

Good

Over: DRAINAGE DITCH

0.2S OF 6TH. & PRAIRIE, Lyon, KS

Built 1990 Load: 39.2 t ADT: 4,000

RS 1507 R.7-130

Good

Over: COAL CREEK

6.0N 4.5E OF OLPE, Lyon, KS

Built 2011 Load: 39.5 t ADT: 236

RD 255 (G.3-225)

Good

Over: PESTER CREEK

1.5S 1.5E OF AMERICUS, Lyon, KS

Built 2022 Load: 39.5 t ADT: 20

RD 300 (G.5-300)

Good

Over: ALLEN CREEK

3.5S 1.0E OF BUSHONG, Lyon, KS

Built 1987 Load: 39.7 t ADT: 10

RD. 310 (S.5-310)

Good

Over: HILL CREEK

2.0S 1.5E OF ADMIRE, Lyon, KS

Built 1988 Load: 39.8 t ADT: 30

I-35 HWY SB

Good

Over: BURLINGAME RD

1.31 MI EAST OF K-99, Lyon, KS

Built 1966 Load: 39.9 t ADT: 7,650

I-35 HWY NB

Good

Over: BURLINGAME RD

1.32 MI EAST OF K-99, Lyon, KS

Built 1966 Load: 39.9 t ADT: 7,650

RS 415 (K.0-11.1)

Good

Over: DOW CREEK

5.0S OF ALLEN, Lyon, KS

Built 1988 Load: 40.0 t ADT: 260

RD. P

Good

Over: TATE BRANCH CREEK

2.5E 4.5S OF OLPE, Lyon, KS

Built 1989 Load: 40.0 t ADT: 40

K99 HWY

Good

Over: ELM CREEK

4.12 MI N US56, Lyon, KS

Built 2007 Load: 40.5 t ADT: 360

RD. U (U-370)

Good

Over: ONION CREEK

4.0N 3.0E OF ADMIRE, Lyon, KS

Built 2022 Load: 40.8 t ADT: 10

RD. B 927-532.3

Good

Over: STREAM

6.5S OF PLYMOUTH, Lyon, KS

Built 2015 Load: 41.1 t ADT: 10

RS 1507 I.0-24.5

Good

Over: COTTONWOOD RIVER

1.5S 1.5W OF EMPORIA, Lyon, KS

Built 1983 Load: 41.3 t ADT: 299

RD 250 (M.3-250)

Good

Over: DOW CREEK

1.0N 6.5E OF AMERICUS, Lyon, KS

Built 1998 Load: 41.5 t ADT: 20

K99 HWY

Good

Over: DOW CREEK

3.05 MI N I35, Lyon, KS

Built 1985 Load: 41.7 t ADT: 1,400

RD 310 (G.8-310)

Good

Over: Allen Creek

3.0S 3.3W of Allen, Lyon, KS

Built 2011 Load: 42.1 t ADT: 50

RD V 961.5-540.6

Good

Over: STREAM

4.1S 3.5W OF HARTFORD, Lyon, KS

Built 1988 Load: 42.2 t ADT: 20

RD X5 965.5-538.7

Good

Over: EAGLE CREEK

3.0S 1.0W OF HARTFORD, Lyon, KS

Built 1994 Load: 42.2 t ADT: 100

I-35 HWY NB (KTA)

Good

Over: COTTONWOOD RIVER

8.51 MI NE CHASE CO LINE, Lyon, KS

Built 1956 Load: 42.9 t ADT: 8,600

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