Allen County, KS

154 public highway bridges

Allen County Bridge Snapshot

Allen County, Kansas contains 154 public highway bridges in the FHWA National Bridge Inventory. Roughly 41.6% are rated “Good,” 37.7% “Fair,” 13% “Poor,” and 13% 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.

154

Total Bridges

41.6%

Good

13%

Poor

13%

Structurally Deficient

Condition Distribution

Good

41.6% (64)

Fair

37.7% (58)

Poor

13% (20)

SD

13% (20)

All Bridges (154)

Sort:

TANK ROAD

Over: US169 HWY

5.50 MI NE NEOSHO COLN, Allen, KS

Built 1980 ADT: 4,456

LOCAL ROAD

Over: US169 HWY

6.51 MI NE NEOSHO COLN, Allen, KS

Built 1980 ADT: 4,874

RS0002

Over: US169 HWY

7.02 MI NE NEOSHO COLN, Allen, KS

Built 1980 ADT: 4,874

LOCAL ROAD

Over: US169 HWY

8.81 MI N NEOSHO COLN, Allen, KS

Built 1980 ADT: 5,711

MINNESOTA ROAD

Over: U-169 HWY

10.30 MI N NEOSHO COLN, Allen, KS

Built 1980 ADT: 4,855

LOCAL ROAD

Over: U-169 HWY

1.01 MI. N. OLD U-169 HWY, Allen, KS

Built 1980 ADT: 4,855

LOCAL ROAD

Over: U-169 HWY

2.57 MI. N. OLD U-169 HWY, Allen, KS

Built 1980 ADT: 4,855

RS2096

Over: US169 HWY

1.31 MI N OF NEOSHO CO LN, Allen, KS

Built 1984 ADT: 4,456

LOCAL ROAD

Over: U169 HWY

2.66 MI N-NEOSHO CO. LINE, Allen, KS

Built 1984 ADT: 4,456

LOCAL RD

Over: US169

4.48 MI N-NEOSHO CO. LINE, Allen, KS

Built 1984 ADT: 4,456

US-169 HWY

Over: US-54 HWY

8.0 MI S OF ALLEN NCOLN, Allen, KS

Built 1998 ADT: 8,180

HAWAII RD OLD K224

Over: US169 HWY

7.5 MI NE NEOSHO CL, Allen, KS

Built 1980 ADT: 4,874

LOCAL RD 15.8-T.0

Over: BIG CREEK,LWC

5.2W 1.0N OF SAVONBURG, Allen, KS

Built 1985 Load: 12.7 t ADT: 30

RS 1492 3400 St.

Over: TRIB. TO ELM CREEK

3.0W 0.2S OF JCT US-59&54, Allen, KS

Built 1940 Load: 13.6 t ADT: 60

RS 1492 3400 St

Over: BRANCH OF ELM CREEK

3.0W 0.5N OF JCT US-59&54, Allen, KS

Built 1935 Load: 13.6 t ADT: 86

Hawaii Rd 19.7-P.0

Over: BIG CREEK

2.0N 2.0W OF ELSMORE, Allen, KS

Built 1981 Load: 13.6 t ADT: 20

800 St. 4.0-I.6

Over: STREAM

3.0W OF IOLA, Allen, KS

Built 1980 Load: 13.7 t ADT: 40

2800 St 14.0-K.5

Over: ELM CREEK

1.5S 1.0E OF LA HARPE, Allen, KS

Built 1982 Load: 15.4 t ADT: 50

N. WASHINGTON AVE.

Over: COON CREEK

02 WASH. AT BENTON, Allen, KS

Built 1988 Load: 16.3 t ADT: 5,000

CAMERON STREET

Over: COON CREEK

21 CAMERON WEST STATE ST, Allen, KS

Built 1930 Load: 16.3 t ADT: 5

4600 St. 23.0-B.4

Over: MIDDLE CREEK

0.5S 3.0E OF MILDRED, Allen, KS

Built 1959 Load: 16.7 t ADT: 60

US54 HWY

Over: ELM CREEK DRAINAGE

4.77 MI. W.US-59, Allen, KS

Built 1967 Load: 17.2 t ADT: 2,680

Idaho Rd 13.7-O.0

Over: STREAM

3.0N 7.2W OF ELSMORE, Allen, KS

Built 1940 Load: 19.1 t ADT: 50

Iowa Rd 14.5-N.0

Over: STREAM

1.5E 5.0S OF LA HARPE, Allen, KS

Built 1935 Load: 19.1 t ADT: 80

LOCAL RD 14.5-T.0

Over: STREAM

1.0N 7.5W OF SAVONBURG, Allen, KS

Built 1930 Load: 19.1 t ADT: 40

Hawaii Rd 16.8-P.0

Over: BIG CREEK,LWC

2.0N 5.2W OF ELSMORE, Allen, KS

Built 1930 Load: 19.1 t ADT: 30

Iowa Rd 18.2-N.0

Over: STREAM

4.0N 2.8W OF ELSMORE, Allen, KS

Built 1930 Load: 19.1 t ADT: 50

LOCAL RD 18.2-S.0

Over: STREAM

3.8W 2.0N OF SAVONBURG, Allen, KS

Built 1940 Load: 19.1 t ADT: 40

LOCAL RD 20.9-S.0

Over: STREAM

1.0S 0.6W OF ELSMORE, Allen, KS

Built 1940 Load: 19.1 t ADT: 50

4400 St 22.0-S.9

Over: STREAM

1.0N OF SAVONBURG, Allen, KS

Built 1940 Load: 19.1 t ADT: 200

LOCAL RD 23.0-V.0

Over: STREAM

1.0S 1.0E OF SAVONBURG, Allen, KS

Built 1970 Load: 19.1 t ADT: 20

200 St 1.0-S.9

Over: STREAM,LWC

3.0W 1.1N OF PETROLIA, Allen, KS

Built 1931 Load: 19.8 t ADT: 40

200 St. 1.0-T.8

Over: STREAM

3.0W 0.2N OF PETROLIA, Allen, KS

Built 1940 Load: 19.8 t ADT: 40

LOCAL RD 1.6-A.0

Over: STREAM

1.5N 1.0W OF GENEVA, Allen, KS

Built 1935 Load: 19.8 t ADT: 20

400 Rd 2.0-O.4

Over: STREAM,LWC

3.5W 1.0N OF HUMBOLDT, Allen, KS

Built 1930 Load: 19.8 t ADT: 40

LOCAL RD 4.2-L.0

Over: STREAM

2.8W 3.0S OF IOLA, Allen, KS

Built 1930 Load: 19.8 t ADT: 20

1000th Rd 5.0-D.8

Over: STREAM

0.8S 3.0W OF CARLYLE, Allen, KS

Built 1930 Load: 19.8 t ADT: 40

LOCAL RD 5.9-L.0

Over: STREAM

1.0W 3.0S OF IOLA, Allen, KS

Built 1940 Load: 19.8 t ADT: 40

Utah Rd 6.5-C.0

Over: COTTONWOOD CREEK

1.0N 1.5W OF CARLYLE, Allen, KS

Built 1940 Load: 19.8 t ADT: 40

LOCAL RD. 7.6-E.0

Over: DEER CREEK

1.0S 0.5W OF CARLYLE, Allen, KS

Built 1930 Load: 19.8 t ADT: 30

8.0-E.0 1600 St

Over: DEER CREEK,LWC

1.0S OF CARLYLE, Allen, KS

Built 1930 Load: 19.8 t ADT: 30

MINOR COL 9.0-N.0

Over: STREAM

3.5E 2.5N OF HUMBOLDT, Allen, KS

Built 1930 Load: 19.8 t ADT: 60

1950 9.8-O.3

Over: STREAM

4.3E 1.2N OF HUMBOLDT, Allen, KS

Built 1940 Load: 19.8 t ADT: 50

2000 St. 10.0-P.7

Over: STREAM

4.0E OF HUMBOLDT, Allen, KS

Built 1940 Load: 19.8 t ADT: 40

2000 St. 10.0-Q.0

Over: STREAM

4.5E 0.5S OF HUMBOLDT, Allen, KS

Built 1940 Load: 19.8 t ADT: 40

LOCAL RD 10.0-S.1

Over: STREAM

4.0E 2.5S OF HUMBOLDT, Allen, KS

Built 1930 Load: 19.8 t ADT: 40

LOCAL RD 10.6-A.0

Over: STREAM

3.0N 2.5E OF CARLYLE, Allen, KS

Built 1935 Load: 19.8 t ADT: 40

Idaho Rd 10.8-O.0

Over: STREAM

5.3E 1.5N OF HUMBOLDT, Allen, KS

Built 1935 Load: 19.8 t ADT: 30

12.0-F.0 2400 St.

Over: STREAM

3.5N 1.0W OF LA HARPE, Allen, KS

Built 1930 Load: 19.8 t ADT: 40

2400 St. 12.0-N.8

Over: STREAM

6.0S 1.0W OF LA HARPE, Allen, KS

Built 1930 Load: 19.8 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

Reviewed byPlainbridges Editorial, Plain Bridges Editorial Team · June 6, 2026