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)

2400 St. 12.0-O.9

Fair

Over: STREAM

6.9S 1.0W OF LA HARPE, Allen, KS

Built 1920 Load: 19.8 t ADT: 30

LOCAL RD 12.7-S.0

Fair

Over: STREAM

2.5S 6.7E OF HUMBOLDT, Allen, KS

Built 1940 Load: 19.8 t ADT: 30

2800 St 14.0-J.3

Fair

Over: STREAM

1.0S 1.0E OF LA HARPE, Allen, KS

Built 1981 Load: 19.8 t ADT: 60

Texas Rd 14.4-D.0

Fair

Over: STREAM

6.4E OF CARLYLE, Allen, KS

Built 1930 Load: 19.8 t ADT: 30

MINOR COL 15.6-F.0

Fair

Over: STREAM

3.5N 2.5E OF LA HARPE, Allen, KS

Built 1930 Load: 19.8 t ADT: 30

3600 St. 18.0-C.4

Fair

Over: STREAM

1.5S 2.0W OF MILDRED, Allen, KS

Built 1930 Load: 19.8 t ADT: 60

3600 St. 18.0-J.3

Fair

Over: STREAM

1.0S 2.0W OF MORAN, Allen, KS

Built 1930 Load: 19.8 t ADT: 50

3800 St. 19.0-G.2

Fair

Over: STREAM

2.3N 1.0W OF MORAN, Allen, KS

Built 1930 Load: 19.8 t ADT: 40

LOCAL RD 21.2-F.0

Fair

Over: STREAM,LWC

3.5N 1.2E OF MORAN, Allen, KS

Built 1930 Load: 19.8 t ADT: 50

4400 St 22.0-E.2

Fair

Over: STREAM

3.2S 2.0E OF MILDRED, Allen, KS

Built 1930 Load: 19.8 t ADT: 40

LOCAL RD 23.9-F.0

Fair

Over: STREAM

3.5N 3.9E OF MORAN, Allen, KS

Built 1930 Load: 19.8 t ADT: 60

4800 St. 24.0-A.8

Fair

Over: MIDDLE CREEK

0.2N 4.0E OF MILDRED, Allen, KS

Built 1930 Load: 19.8 t ADT: 20

MINOR COL14.8-U.0

Fair

Over: STREAM

7.2W OF SAVONBURG, Allen, KS

Built 1930 Load: 20.0 t ADT: 30

4800 St. 24.0-D.1

Fair

Over: STREAM

2.0S 4.0E OF MILDRED, Allen, KS

Built 1981 Load: 25.0 t ADT: 20

LOCAL RD 2.1-B.0

Fair

Over: STREAM

0.5N 0.5W OF GENEVA, Allen, KS

Built 1930 Load: 32.7 t ADT: 30

800 Rd 4.0-C.2

Fair

Over: STREAM

1.5E 0.8S OF GENEVA, Allen, KS

Built 1930 Load: 32.7 t ADT: 30

CHESTNUT STREET

Fair

Over: COON CREEK

22 CHESTNUT & BENTON ST., Allen, KS

Built 1927 Load: 32.7 t ADT: 200

Nevada Rd 8.2-I.3

Fair

Over: ROCK CREEK

S.E. EDGE OF IOLA, Allen, KS

Built 1977 Load: 33.1 t ADT: 120

US59 HWY

Fair

Over: BIG CREEK

3.87 MI. S. US-54, Allen, KS

Built 1970 Load: 33.6 t ADT: 1,410

Iowa Rd 3.3-N.0

Fair

Over: STREAM

2.0N 2.0W OF HUMBOLDT, Allen, KS

Built 1918 Load: 40.6 t ADT: 5

LOCAL RD 14.5-S.0

Good

Over: STREAM

7.0W 1.0S OF ELSMORE, Allen, KS

Built 1960 Load: 5.1 t ADT: 30

Hawaii Rd 19.4-P.0

Good

Over: STREAM

2.0N 2.0W OF ELSMORE, Allen, KS

Built 1981 Load: 10.9 t ADT: 20

LOCAL RD. 9.0-J.7

Good

Over: ELM CREEK

1.7S 2.0E OF IOLA, Allen, KS

Built 1979 Load: 13.6 t ADT: 20

LOCAL RD 8.9-R.0

Good

Over: STREAM

2.9E 1.5S OF HUMBOLDT, Allen, KS

Built 2005 Load: 14.2 t ADT: 30

4600 St. 23.0-D.5

Good

Over: STREAM

3.5S 3.0E OF MILDRED, Allen, KS

Built 1958 Load: 16.3 t ADT: 60

US59 HWY

Good

Over: BIG CREEK DRAINAGE

1.62 MI. S. US-54, Allen, KS

Built 1931 Load: 17.2 t ADT: 3,210

2600 St. 13.0-F.4

Good

Over: ROCK CREEK

3.0N OF LA HARPE, Allen, KS

Built 1970 Load: 18.0 t ADT: 30

US54 HWY

Good

Over: ELM CREEK

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

Built 1967 Load: 18.1 t ADT: 2,680

US59 HWY

Good

Over: BIG CREEK DRAINAGE

5.70 MI. S. US-54, Allen, KS

Built 1931 Load: 18.1 t ADT: 1,410

Iowa Rd 13.1-N.0

Good

Over: STREAM

5.0S OF LA HARPE, Allen, KS

Built 1930 Load: 19.1 t ADT: 50

Idaho Rd 15.4-O.0

Good

Over: STREAM

6.0S 2.4E OF LA HARPE, Allen, KS

Built 1930 Load: 19.1 t ADT: 50

LOCAL RD 9.8-R.0

Good

Over: STREAM

3.9E 1.5S OF HUMBOLDT, Allen, KS

Built 1974 Load: 19.8 t ADT: 80

3000 St. 15.0-F.8

Good

Over: ROCK CREEK

3.0N 2.0E OF LA HARPE, Allen, KS

Built 1970 Load: 19.8 t ADT: 40

3800 St. 19.0-D.5

Good

Over: STREAM

2.5S 1.0W OF MILDRED, Allen, KS

Built 1930 Load: 19.8 t ADT: 40

LOCAL RD 21.7-I.0

Good

Over: MARMATON RIVER

0.5N 1.7E OF MORAN, Allen, KS

Built 1973 Load: 19.8 t ADT: 60

Arizona Rd 7.3-T.8

Good

Over: STREAM

4.3S 1.3E OF HUMBOLDT, Allen, KS

Built 1976 Load: 23.9 t ADT: 60

US54 HWY

Good

Over: ELM CREEK DRAINAGE

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

Built 1967 Load: 24.5 t ADT: 2,680

11.8-G.0 Oregon Rd

Good

Over: ROCK CREEK

2.5N 1.2W OF LA HARPE, Allen, KS

Built 1987 Load: 29.7 t ADT: 40

12.0-F.2 2400 St.

Good

Over: ROCK CREEK

3.0N OF LAHARPE, Allen, KS

Built 1981 Load: 29.7 t ADT: 30

US54 HWY

Good

Over: ELM CREEK DRAINAGE

3.61 MI. E. US-169, Allen, KS

Built 1969 Load: 29.9 t ADT: 2,760

US59, K52 HWY

Good

Over: S F LITTLE OSAGE RIVER

2.89 MI N US54, Allen, KS

Built 1962 Load: 30.8 t ADT: 1,600

US169 HWY

Good

Over: NEOSHO RIVER &LOCAL RD

NEOSHO - ALLEN CO LINE, Allen, KS

Built 1984 Load: 30.8 t ADT: 4,200

US169 HWY

Good

Over: NEOSHO OVERFLOW

1.10 MI N ALLEN CO LINE, Allen, KS

Built 1985 Load: 30.8 t ADT: 4,200

US59, K52 HWY

Good

Over: SF LITTLE OSAGE RIVER

4.99 MI N US54, Allen, KS

Built 1962 Load: 31.8 t ADT: 1,600

2600 St. 13.0-B.9

Good

Over: DEER CREEK

1.2N 5.0E OF CARLYLE, Allen, KS

Built 1988 Load: 32.4 t ADT: 80

4200 St. 21.0-D.7

Good

Over: STREAM

2.7S 1.0E OF MILDRED, Allen, KS

Built 1930 Load: 32.7 t ADT: 60

N. COTTONWOOD ST.

Good

Over: COON CREEK

04 COTTONWOOD/ CARPENTER, Allen, KS

Built 1962 Load: 32.7 t ADT: 1,700

BUCHANAN STREET

Good

Over: COON CREEK

29 BUCHANAN @ COTTONWOOD, Allen, KS

Built 1963 Load: 32.7 t ADT: 600

1950 9.8-O.9

Good

Over: COAL CREEK

4.0E OF HUMBOLDT, Allen, KS

Built 1990 Load: 34.0 t ADT: 30

LOCAL RD 14.4-V.0

Good

Over: TRIB. BIG CREEK

8.4E 5.5S OF HUMBOLDT, Allen, KS

Built 1998 Load: 34.5 t ADT: 30

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