Thomas County, KS

61 public highway bridges

Thomas County Bridge Snapshot

Thomas County, Kansas contains 61 public highway bridges in the FHWA National Bridge Inventory. Roughly 45.9% are rated “Good,” 29.5% “Fair,” 3.3% “Poor,” and 3.3% 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.

61
Total Bridges
45.9%
Good
3.3%
Poor
3.3%
Structurally Deficient

Condition Distribution

Good
45.9% (28)
Fair
29.5% (18)
Poor
3.3% (2)
SD
3.3% (2)

All Bridges (61)

I-70 HWY WESTBOUND

Unknown

Over: US-24 HWY

JCT I-70 / US-24, Thomas, KS

Built 1966 ADT: 915

I-70 HWY EASTBOUND

Unknown

Over: U24 HWY

JCT I-70 / US-24, Thomas, KS

Built 1966 ADT: 915

COUNTY ROAD

Unknown

Over: I-70 HIGHWAY

3.97 MI EAST OF US-24, Thomas, KS

Built 1966 ADT: 6,002

I-70 HWY WESTBOUND

Unknown

Over: K-25 HIGHWAY

JCT I-70 / K-25, Thomas, KS

Built 1965 ADT: 3,767

I-70 HWY EASTBOUND

Unknown

Over: K-25 HIGHWAY

JCT I-70 / K-25, Thomas, KS

Built 1965 ADT: 3,767

COUNTRY CLUB DR.

Unknown

Over: I-70 HIGHWAY

1.00 MI EAST OF K-25, Thomas, KS

Built 1964 ADT: 6,220

LOCAL RD

Unknown

Over: I-70 HIGHWAY

4.76 MI SE OF K-25, Thomas, KS

Built 1965 ADT: 6,220

COUNTY ROAD

Unknown

Over: I70 HWY

7.02 MI SE OF K-25, Thomas, KS

Built 1965 ADT: 6,220

RS0886

Unknown

Over: I70 HWY, WL-EL

8.94MI SE JT K25, Thomas, KS

Built 1965 ADT: 6,220

LOCAL ROAD

Unknown

Over: I70 HWY EB/ WB

12.29 MI SE K25, Thomas, KS

Built 1965 ADT: 6,220

RS0624

Unknown

Over: I70 HWY EB/ WB

1.39 MI NW JCT US 83, Thomas, KS

Built 1965 ADT: 6,220

LOCAL ROAD

Unknown

Over: I70 HWY, WL-EL

2.29 MI SE US83, Thomas, KS

Built 1965 ADT: 5,456

US83 HWY

Unknown

Over: I70 HWY

JT I70/US83, Thomas, KS

Built 1965 ADT: 5,456

K25 HWY

Fair

Over: PRAIRIE DOG CREEK DRG

0.92 MI. NORTH OF US-24, Thomas, KS

Built 1934 Load: 20.0 t ADT: 2,430

K25 HWY

Fair

Over: PRAIRIE DOG CREEK DRG

1.19 MI. NORTH OF I-70, Thomas, KS

Built 1965 Load: 23.6 t ADT: 8,160

County Rd 14Q

Fair

Over: PRAIRIE DOG CREEK

2.1S 4.0W OF COLBY, Thomas, KS

Built 1967 Load: 23.7 t ADT: 40

I-70 HIGHWAY

Fair

Over: PRAIRIE DOG CREEK

3.73 MI EAST OF US-24, Thomas, KS

Built 1966 Load: 25.4 t ADT: 6,350

K25 HWY

Fair

Over: S FORK SOLOMON RIVER

8.90 MI N LOGAN CO LINE, Thomas, KS

Built 1940 Load: 28.1 t ADT: 490

PINE STREET

Fair

Over: TRIB. TO PRAIRIE DOG CR.

CITY OF COLBY, Thomas, KS

Built 1950 Load: 32.7 t ADT: 1,650

FRANKLIN STREET

Fair

Over: TRIB. TO PRAIRIE DOG CR.

CITY OF COLBY, Thomas, KS

Built 1950 Load: 32.7 t ADT: 4,800

COUNTRY CLUB DRIVE

Fair

Over: TRIB. TO PRAIRIE DOG CR.

CITY OF COLBY, Thomas, KS

Built 1950 Load: 32.7 t ADT: 1,465

County Rd 7

Fair

Over: MIDDLE FORK SAPPA CREEK

8.0N 4.0W OF LEVANT, Thomas, KS

Built 1981 Load: 35.9 t ADT: 25

I-70 HIGHWAY

Fair

Over: COUNTY ROAD

1.36 MI E. OF K-184, Thomas, KS

Built 1968 Load: 36.3 t ADT: 5,650

I-70 HIGHWAY

Fair

Over: PRAIRIE DOG CR DRAIN

1.13 MI WEST OF K-25, Thomas, KS

Built 1966 Load: 36.3 t ADT: 6,350

I-70 HWY WESTBOUND

Fair

Over: K-184 HWY

1.15 MI E. OF SH CO. L, Thomas, KS

Built 1968 Load: 37.2 t ADT: 5,650

I-70 HWY EASTBOUND

Fair

Over: K184 HWY

1.16 MI E. OF SH CO. L, Thomas, KS

Built 1968 Load: 37.2 t ADT: 5,650

I70 HWY, WL-EL

Fair

Over: N FORK SALINE RIVER

0.50MI SE JT U83, Thomas, KS

Built 1965 Load: 37.2 t ADT: 5,750

I70 HWY, WL-EL

Fair

Over: S FORK SALINE RIVER

3.74 MI SE US83, Thomas, KS

Built 1965 Load: 37.2 t ADT: 5,750

I-70 HIGHWAY

Fair

Over: SOUTH FORK SAPPA CREEK

4.01 MI E. OF K-184, Thomas, KS

Built 1966 Load: 38.1 t ADT: 5,650

I-70 HIGHWAY

Fair

Over: PRAIRIE DOG CREEK DRG

2.02 MI EAST OF US-24, Thomas, KS

Built 1966 Load: 42.6 t ADT: 6,350

I-70 HIGHWAY

Fair

Over: SOUTH FORK SAPPA CREEK

0.38 MI E. OF SH CO. L, Thomas, KS

Built 1967 Load: 50.8 t ADT: 6,200

US24 HWY

Good

Over: PRAIRIE DOG CREEK DRG

0.86 MI. EAST OF K-25, Thomas, KS

Built 1938 Load: 14.7 t ADT: 4,310

I-70 HIGHWAY

Good

Over: N FORK SOLOMON RIVER

3.50 MI SE OF K-25, Thomas, KS

Built 1965 Load: 15.4 t ADT: 6,550

Co Rd F (RS 624)

Good

Over: NORTH FORK SALINE RIVER

5.0S 0.4E OF MINGO, Thomas, KS

Built 1965 Load: 18.7 t ADT: 85

US24 HWY

Good

Over: PRAIRIE DOG CREEK

1.78 MI. WEST OF K-25, Thomas, KS

Built 1950 Load: 19.1 t ADT: 2,100

K25 HWY

Good

Over: PRAIRIE DOG CREEK

0.82 MI. NORTH OF US-24, Thomas, KS

Built 1934 Load: 20.0 t ADT: 2,430

US83 HWY

Good

Over: SOLOMON RIVER DRAINAGE

4.13 MI N JCT I70, Thomas, KS

Built 1985 Load: 20.0 t ADT: 2,280

Co Rd 36 (RS 1474)

Good

Over: NORTH FORK SALINE RIVER

13.5S OF MENLO, Thomas, KS

Built 1983 Load: 21.7 t ADT: 130

County Rd 32

Good

Over: SOUTH FORK SALINE RIVER

9.0S 8.0E OF MINGO, Thomas, KS

Built 1984 Load: 21.8 t ADT: 30

County Rd 24

Good

Over: TRIB TO S FORK SOLOMON

1.5N OF MINGO, Thomas, KS

Built 1964 Load: 22.4 t ADT: 60

K25 HWY

Good

Over: S FORK SAPPA CREEK DRG

6.49 MI. NORTH OF US-24, Thomas, KS

Built 1934 Load: 23.6 t ADT: 1,720

County Rd Z

Good

Over: PRAIRIE DOG CREEK

2.0N 1.6W OF REXFORD, Thomas, KS

Built 1986 Load: 23.8 t ADT: 25

Co Rd 11 (RS 1510)

Good

Over: PRAIRIE DOG CREEK

3.0S OF LEVANT, Thomas, KS

Built 1966 Load: 25.3 t ADT: 285

County Rd 15

Good

Over: PRAIRIE DOG CREEK

1.3S 4.0W OF COLBY, Thomas, KS

Built 1959 Load: 28.8 t ADT: 120

I-70 HWY WESTBOUND

Good

Over: UNION PACIFIC RAILROAD

5.81 MI SE OF K-25, Thomas, KS

Built 1965 Load: 29.9 t ADT: 6,550

I-70 HWY EASTBOUND

Good

Over: UNION PACIFIC RAILROAD

5.82 MI SE OF K-25, Thomas, KS

Built 1965 Load: 29.9 t ADT: 6,550

I-70 HIGHWAY

Good

Over: S FK SOLOMON R DRAIN

7.23 MI SE OF K-25, Thomas, KS

Built 1965 Load: 34.5 t ADT: 6,550

I-70 HWY WESTBOUND

Good

Over: COUNTY ROAD

4.53 MI E. OF K-184, Thomas, KS

Built 1966 Load: 38.1 t ADT: 5,650

I-70 HWY EASTBOUND

Good

Over: COUNTY ROAD

4.52 MI E. OF K-184, Thomas, KS

Built 1966 Load: 38.1 t ADT: 5,650

I-70 HWY WESTBOUND

Good

Over: COUNTY ROAD

7.49 MI E. OF K-184, Thomas, KS

Built 1966 Load: 38.1 t ADT: 5,650

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