Logan County, CO

182 public highway bridges

Logan County Bridge Snapshot

Logan County, Colorado contains 182 public highway bridges in the FHWA National Bridge Inventory. Roughly 29.7% are rated “Good,” 52.7% “Fair,” 8.8% “Poor,” and 8.8% 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 CO 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.

182
Total Bridges
29.7%
Good
8.8%
Poor
8.8%
Structurally Deficient

Condition Distribution

Good
29.7% (54)
Fair
52.7% (96)
Poor
8.8% (16)
SD
8.8% (16)

All Bridges (182)

I 76 ML WBND

Unknown

Over: SH 55 ML

CROOK INTERCHANGE, Logan, CO

Built 1966 ADT: 270

I 76 ML EBND

Unknown

Over: SH 55 ML

CROOK INTERCHANGE, Logan, CO

Built 1966 ADT: 720

I 76 ML WBND

Unknown

Over: SONNENBERG CROSSING

7.9 MI SW OF JCT SH 59, Logan, CO

Built 1968 ADT: 110

I 76 ML EBND

Unknown

Over: SONNENBERG CROSSING

8.1 MI NE OF JCT SH 55, Logan, CO

Built 1968 ADT: 110

I76 ML EBND

Unknown

Over: SH 63 ML

ATWOOD EXIT HWY 63, Logan, CO

Built 2003 ADT: 650

I 76 ML WBND

Unknown

Over: SH 63 ML

ATWOOD EXIT (HWY 63), Logan, CO

Built 2003 ADT: 1,600

I 76 ML EBND

Unknown

Over: COUNTY ROAD 14

8 MI SW OF STERLING, Logan, CO

Built 2003 ADT: 4,150

I 76 ML WBND

Unknown

Over: COUNTY ROAD 14

7.7 MI SW OF STERLING EXI, Logan, CO

Built 2002

I 76 ML WBND

Unknown

Over: US 6 ML

STERLING EXIT, Logan, CO

Built 1994 ADT: 11,000

I 76 ML EBND

Unknown

Over: US 6 ML

STERLING EXIT, Logan, CO

Built 1994 ADT: 11,000

I 76 ML EBND

Unknown

Over: FARM ROAD

3.3 MI NE OF SH 63, Logan, CO

Built 2003 ADT: 100

I 76 ML WBND

Unknown

Over: FARM ROAD

6.25 MI SE OF STERLING, Logan, CO

Built 2003 ADT: 100

I76 ML EBND

Unknown

Over: FARM ROAD

4.5 MI SW OF STERLING EXT, Logan, CO

Built 2003

I 76 ML WBND

Unknown

Over: FARM ROAD

4.5 MI SW OF STERLING EXT, Logan, CO

Built 2003 ADT: 100

I 76 ML EBND

Unknown

Over: FARM ROAD

2.5 MI SW OF STERLING EXT, Logan, CO

Built 2003 ADT: 100

I 76 ML WBND

Unknown

Over: FARM ROAD

2.5 MI SW OF STERLING EXT, Logan, CO

Built 2003 ADT: 4,150

County Road 63

Fair

Over: Wildhorse Draw

0.2 Mi S of Co Rd 72, Logan, CO

Built 1992 Load: 10.6 t ADT: 28

County Road 91

Fair

Over: Frenchman Creek

0.2 Mi N of Co Rd 91, Logan, CO

Built 1940 Load: 14.9 t ADT: 23

SH 113 ML

Fair

Over: POINT-O-ROCKS CANAL

7.4 MI NORTH OF JCT SH 13, Logan, CO

Built 1937 Load: 16.2 t ADT: 1,100

County Road 31

Fair

Over: Pawnee Creek

0.1 Mi. N. of Co Rd 18.2, Logan, CO

Built 1950 Load: 16.7 t ADT: 41

SH 14 ML

Fair

Over: NORTH STERLING CANAL

15.6 MI E OF JCT SH 71 SO, Logan, CO

Built 1947 Load: 16.9 t ADT: 3,500

County Road 52

Fair

Over: Harmony No. 2 Canal

0.4 Mi E of Co Rd 65.7, Logan, CO

Built 1920 Load: 16.9 t ADT: 2

US 6 ML

Fair

Over: UP RR

12 MI SW OF STERLING, Logan, CO

Built 1999 Load: 17.0 t ADT: 1,000

County Road 33

Fair

Over: N. Sterling Inlet Canal

0.3 Mi N of Co Rd 32, Logan, CO

Built 1940 Load: 17.3 t ADT: 61

County Road 46

Fair

Over: Unnamed Drainage Ditch

0.3 Mi E of Co Rd 53, Logan, CO

Built 1998 Load: 17.8 t ADT: 91

County Road 56

Fair

Over: N. Sterling Outlet Canal

0.9 Mi W of St Hwy 113, Logan, CO

Built 1940 Load: 19.1 t ADT: 3

SH 113 ML

Fair

Over: DRAW

12.5 MI N OF JCT SH 138, Logan, CO

Built 1937 Load: 19.2 t ADT: 1,100

County Road 25

Fair

Over: Pawnee Ditch

0.7 Mi N of US Hwy 6, Logan, CO

Built 1950 Load: 19.4 t ADT: 777

US 6 ML

Fair

Over: SOUTH PLATTE RIVER

1 MI EAST OF JCT SH 14, Logan, CO

Built 1957 Load: 21.5 t ADT: 9,900

County Road 67

Fair

Over: South Platte River

1.7 Mi N of I-76, Logan, CO

Built 1983 Load: 21.8 t ADT: 322

County Road 29.5

Fair

Over: S. Platte River Overflow

0.7 Mi. N. of Co. Rd. 12, Logan, CO

Built 1986 Load: 22.0 t ADT: 76

US 6 ML

Fair

Over: PAWNEE CANAL

18.2 MI NO OF JCT I-76, Logan, CO

Built 1966 Load: 22.3 t ADT: 1,000

US 6 ML

Fair

Over: SOUTH PLATTE RIVER

12.7 MI SW OF STERLING, Logan, CO

Built 1966 Load: 22.5 t ADT: 1,000

County Road 29

Fair

Over: Pawnee Creek

1.3 Mi. N. of Co Rd 16.5, Logan, CO

Built 1969 Load: 22.8 t ADT: 58

US 138 ML

Fair

Over: LOW LINE DITCH

1.8 MI NE OF JCT US 6 STE, Logan, CO

Built 1955 Load: 24.7 t ADT: 3,600

County Road 32

Fair

Over: N. Sterling Inlet Canal

0.8 Mi. E. of Co. Rd. 31, Logan, CO

Built 1999 Load: 24.9 t ADT: 93

County Road 12

Fair

Over: Schneider Ditch

50 Ft. W. of Co. Rd. 31, Logan, CO

Built 1956 Load: 25.2 t ADT: 43

County Road 41

Fair

Over: Sterling No 1 Ditch

0.6 Mi N of Co Rd 32, Logan, CO

Built 1950 Load: 25.5 t ADT: 505

County Road 67.9

Fair

Over: N. Sterling Outlet Canal

0.4 Mi N of Co Rd 66, Logan, CO

Built 1940 Load: 25.9 t

County Road 33

Fair

Over: N. Sterling Inlet Canal

0.9 MI N OF CO RD44, Logan, CO

Built 1995 Load: 26.2 t ADT: 119

SH 63 ML

Fair

Over: SOUTH PLATTE RIVER

2.7MI N OF JCT I76, Logan, CO

Built 1982 Load: 26.5 t ADT: 2,000

SH 113 ML

Fair

Over: CANAL

1.3 MI N. OF JCT US 138, Logan, CO

Built 1937 Load: 27.4 t ADT: 1,200

County Road 38

Fair

Over: N. Sterling Inlet Canal

50 Ft. W. of Co. Rd. 39, Logan, CO

Built 1991 Load: 28.2 t ADT: 135

County Road 6

Fair

Over: N. Sterling Inlet Canal

0.4 M. E. of Co. Rd. 17.7, Logan, CO

Built 1989 Load: 29.7 t ADT: 134

County Road 22

Fair

Over: Pawnee Ditch

0.9 Mi. E. of Co. Rd. 31, Logan, CO

Built 1995 Load: 29.8 t ADT: 289

I 76 ML WBND

Fair

Over: TWENTY TWO SLOUGH

14 MI SW OF STERLING EXIT, Logan, CO

Built 1964 Load: 29.9 t ADT: 5,500

US 6 ML

Fair

Over: SOUTH PLATTE R OVFLW

1.1 MI EAST OF JCT SH 14, Logan, CO

Built 1957 Load: 30.8 t ADT: 9,900

US 138 ML

Fair

Over: POWELL DITCH

7.7 MI NE OF JCT SH 113, Logan, CO

Built 1930 Load: 31.3 t ADT: 690

County Road 35

Fair

Over: N. Sterling Inlet Canal

50 Ft. North of CO Rd 36, Logan, CO

Built 1999 Load: 32.1 t ADT: 79

FARMERS ROAD AR

Fair

Over: DRAINAGE DITCH AR

FARMERS RD-46' Rt OF, Logan, CO

Built 1970 Load: 32.7 t ADT: 12

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