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)

FAU 1101

Good

Over: STREAM

5.0E. OF PLYMOUTH, Lyon, KS

Built 2003 Load: 43.1 t ADT: 2,796

RD Z (Z.0-345)

Good

Over: SALT CREEK

1.0N 8.0E OF ADMIRE, Lyon, KS

Built 2016 Load: 43.4 t ADT: 10

RD. E 933.0-549.8

Good

Over: STREAM

4.8S 6.0W OF OLPE, Lyon, KS

Built 1999 Load: 43.5 t ADT: 49

RD. A (A.0-26.7)

Good

Over: STREAM

4.3S 1.0W OF PLYMOUTH, Lyon, KS

Built 1998 Load: 44.0 t ADT: 10

K-99 HIGHWAY

Good

Over: 142 MILE CREEK

0.13 MI N US-56 HWY, Lyon, KS

Built 2001 Load: 44.4 t ADT: 485

K99 HWY

Good

Over: ALLEN CREEK

1.29 MI N I35, Lyon, KS

Built 1985 Load: 44.5 t ADT: 1,680

K99 HWY

Good

Over: COAL CREEK

6.02 MI S US50, Lyon, KS

Built 1987 Load: 44.5 t ADT: 2,480

RD. U (U-300)

Good

Over: 142 MILE CREEK

3.0S 3.0E OF ADMIRE, Lyon, KS

Built 1998 Load: 44.7 t ADT: 80

RS 2066 T.2-175

Good

Over: BADGER CREEK

7.0E OF EMPORIA, Lyon, KS

Built 2003 Load: 45.4 t ADT: 604

RD. 360 (Y.3-360)

Good

Over: SALT CREEK

2.5N 7.0E OF ADMIRE, Lyon, KS

Built 2016 Load: 46.2 t ADT: 20

RS 2066 T.0-175

Good

Over: COON CREEK

6.5E OF EMPORIA, Lyon, KS

Built 2003 Load: 46.4 t ADT: 604

COUNTY RD. 390

Good

Over: ELM CREEK

5.5N OF ADMIRE, Lyon, KS

Built 2000 Load: 46.4 t ADT: 20

I-35 HWY (KTA)

Good

Over: JACOBS CREEK

1.96 MI NE CHASE CO LINE, Lyon, KS

Built 1956 Load: 46.7 t ADT: 8,600

RD 260 (M.0-258)

Good

Over: DOW CREEK

1.8N 6.0E OF AMERICUS, Lyon, KS

Built 1987 Load: 47.0 t ADT: 30

OLD HWY 50 T.0-170

Good

Over: COON CREEK

4.0W 3.5N OF NEOSHO, Lyon, KS

Built 1999 Load: 47.1 t ADT: 80

US-50 HWY

Good

Over: MOON CREEK

4.84 MI E CHASE COLN, Lyon, KS

Built 1995 Load: 47.2 t ADT: 5,500

US 50 963.6-519.0

Good

Over: DRY CREEK

9.0E OF EMPORIA, Lyon, KS

Built 1999 Load: 47.5 t ADT: 605

RS 2066 P-175

Good

Over: NEOSHO RIVER

2.5E OF EMPORIA, Lyon, KS

Built 1999 Load: 47.9 t ADT: 392

US-56 HIGHWAY

Good

Over: HILL CREEK

2.67 MI W OF K-99, Lyon, KS

Built 2002 Load: 48.1 t ADT: 970

I-335 HWY (KTA) SB

Good

Over: DOW CREEK & LOCAL ROAD

0.89 MI NE JCT K-99, Lyon, KS

Built 1956 Load: 48.9 t ADT: 5,450

I-335 HWY (KTA) NB

Good

Over: DOW CREEK & LOCAL ROAD

0.90 MI NE JCT K-99, Lyon, KS

Built 1956 Load: 48.9 t ADT: 5,450

K99 HWY

Good

Over: STILLMAN CREEK

3.49 MI N I35, Lyon, KS

Built 1985 Load: 49.9 t ADT: 1,400

K-99 HWY

Good

Over: EAGLE CREEK

5.99 MI N GW COLN, Lyon, KS

Built 2010 Load: 50.2 t ADT: 1,500

US-56 HIGHWAY

Good

Over: 142 MILE CREEK

.11 MI E K-99 HIGHWAY, Lyon, KS

Built 2002 Load: 52.6 t ADT: 815

RD. 210 RS 1202

Good

Over: TRIB. TO PLUMB CREEK

4.0N 2.9E OF EMPORIA, Lyon, KS

Built 1988 Load: 53.1 t ADT: 206

RS 412 F.5-18.5

Good

Over: NEOSHO RIVER

0.5E 2.5S OF AMERICUS, Lyon, KS

Built 1963 Load: 53.3 t ADT: 2,599

CTY RD 37(M.4-370)

Good

Over: 142 MILE CREEK

2.5N 1.5E OF ALLEN, Lyon, KS

Built 2018 Load: 54.2 t ADT: 10

US-50 HWY

Good

Over: BEAVER CREEK

1.87 MI E CHASE COLN, Lyon, KS

Built 1995 Load: 54.4 t ADT: 5,500

US-50 HWY

Good

Over: BNSF RAILWAY

1 MI E U-50/K-99 JCT, Lyon, KS

Built 2005 Load: 55.3 t ADT: 5,150

RD Y 967-504.7

Good

Over: STREAM

0.5W 0.7S OF READING, Lyon, KS

Built 1987 Load: 56.2 t ADT: 30

US-50 HWY

Good

Over: LINCK CREEK

2.92 MI E CHASE COLN, Lyon, KS

Built 1995 Load: 57.2 t ADT: 5,500

RD K 943.0-514.6

Good

Over: STREAM

0.5N of Emporia, Lyon, KS

Built 1989 Load: 61.1 t ADT: 20

MARTIN DR.

Good

Over: UNNAMED STREAM

0.4E OF OVERLANDER RD., Lyon, KS

Built 2022 Load: 63.5 t ADT: 100

RS 1902 B.7-16.0

Good

Over: TRIB. TO NEOSHO RIVER

3.3W OF AMERICUS, Lyon, KS

Built 1990 Load: 63.9 t ADT: 58

LOCAL RD. F.9-22.0

Good

Over: STREAM

6.0S 1.0E OF AMERICUS, Lyon, KS

Built 2023 Load: 80.0 t ADT: 50

US50 HWY

Good

Over: LUDY CREEK

3.24 MI E CHASE CO LINE, Lyon, KS

Built 1947 Load: 82.6 t ADT: 5,500

I-35 HWY

Good

Over: COTTONWOOD RIV DRAIN

0.19 MI E KTA TOLL BOOTH, Lyon, KS

Built 1967 Load: 89.8 t ADT: 6,850

I-35 HIGHWAY

Good

Over: FRONTAGE RD

4.58 MI EAST OF K-99, Lyon, KS

Built 1974 Load: 99.8 t ADT: 8,350

RD 70 931.7-540.7

Poor

Over: STREAM

6.3W OF OLPE, Lyon, KS

Built 1939 Load: 13.6 t ADT: 10

RD H 939.0-544.1

Poor

Over: MOON BRANCH CREEK

3.1W 2.1S OF OLPE, Lyon, KS

Built 1928 Load: 22.7 t ADT: 80

RD. T (T.0-281)

Poor

Over: STREAM

5.5W 3.0N OF READING, Lyon, KS

Built 1971 Load: 22.7 t ADT: 30

RS 413 E.7-16.0

Poor

Over: PESTER CREEK

IN AMERICUS, Lyon, KS

Built 1927 Load: 26.4 t ADT: 75

RD P (N.0-25.7)

Structurally Deficient

Over: COTTONWOOD RIVER

7.0W 0.5S NEOSHO RAPIDS, Lyon, KS

Built 1910 Load: 10.9 t ADT: 30

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