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)

SH 14 ML

Fair

Over: PAWNEE DITCH

2 MI W OF STERLING, Logan, CO

Built 1965 Load: 32.7 t ADT: 3,500

US 6 ML

Fair

Over: HENDERSON-SMITH DITCH

1.2 MI EAST OF JCT SH 14, Logan, CO

Built 1965 Load: 32.7 t ADT: 9,900

County Road 25

Fair

Over: N. Sterling Inlet Canal

1.1 Mi N of Co Rd 20.5, Logan, CO

Built 1969 Load: 32.7 t ADT: 390

County Road 39

Fair

Over: Sterling Seep Ditch No 1

20 Ft N of Co Rd 30.5, Logan, CO

Built 1992 Load: 32.7 t ADT: 1,820

County Road 52

Fair

Over: Lewis Creek

0.25 Mi E of Co Rd 57, Logan, CO

Built 1982 Load: 32.7 t ADT: 19

County Road 55

Fair

Over: N Sterling Outlet Canal

0.2 MI N of Co Rd 58, Logan, CO

Built 2014 Load: 32.7 t ADT: 23

County Road 60.5

Fair

Over: Harmony No. 1 Canal

0.4 Mi E of Co Rd 79, Logan, CO

Built 1965 Load: 32.7 t ADT: 28

County Road 65

Fair

Over: Skinner Draw

0.6 Mi N of Co Rd 54.2, Logan, CO

Built 1982 Load: 32.7 t ADT: 229

County Road 66

Fair

Over: N. Sterling Outlet Canal

1.6 Mi E of Co Rd 65, Logan, CO

Built 2005 Load: 32.7 t ADT: 34

County Road 37

Fair

Over: N. Sterling Outlet Canal

0.6 Mi N of Co Rd 46, Logan, CO

Built 1989 Load: 33.0 t ADT: 308

County Road 41

Fair

Over: N. Sterling Outlet Canal

0.2 Mi N of Co Rd 48, Logan, CO

Built 2000 Load: 33.2 t ADT: 29

County Road 81

Fair

Over: Harmony No. 1 canal

1.9 Mi N of US Hwy 138, Logan, CO

Built 1995 Load: 33.2 t ADT: 154

County Road 30

Fair

Over: Pioneer Drainage Ditch

50 Ft W of Co Rd 39, Logan, CO

Built 1996 Load: 33.4 t ADT: 1,807

SH 14 ML

Fair

Over: PAWNEE CREEK

8 MI E OF JCT SH 71 SOUTH, Logan, CO

Built 1999 Load: 33.7 t ADT: 1,900

US 6 ML

Fair

Over: CITY STREETS, UP RR

IN STERLING, Logan, CO

Built 1972 Load: 34.0 t ADT: 9,900

County Road 9

Fair

Over: Reymer Creek

3.0 Mi N of St Hwy 14, Logan, CO

Built 1993 Load: 34.3 t ADT: 59

US 6 ML

Fair

Over: SOUTH PLATTE R OVFLW

12 MI SW OF STERLING, Logan, CO

Built 1966 Load: 34.6 t ADT: 1,000

I 76 ML WBND

Fair

Over: CO.RD 93 RED LION ROAD

9.6 MI SW OF JCT SH 59, Logan, CO

Built 1968 Load: 34.7 t ADT: 4,000

I 76 ML EBND

Fair

Over: CO.RD 93 RED LION ROAD

6.4 MI NE OF JCT 55-CROOK, Logan, CO

Built 1968 Load: 34.7 t ADT: 4,000

US 6 ML

Fair

Over: SOUTH PLATTE R OVFLW

1 MI EAST OF JCT SH 14, Logan, CO

Built 1957 Load: 34.7 t ADT: 9,900

County Road 19.3

Fair

Over: Pawnee Creek

2.1 Mi N of Co Rd 20., Logan, CO

Built 1994 Load: 34.7 t ADT: 24

County Road 20.5

Fair

Over: Pawnee Creek

0.1 Mi E of Co Rd 25, Logan, CO

Built 1991 Load: 34.7 t ADT: 59

County Road 58

Fair

Over: Harmony No. 1 canal

0.8 Mi E of Co Rd 75, Logan, CO

Built 1997 Load: 34.7 t ADT: 75

County Rd. 56

Fair

Over: Harmony No. 1 Canal

0.1 MI S of US HWY 138, Logan, CO

Built 2016 Load: 35.3 t

Cty Rd 8.5/Park Av

Fair

Over: Pawnee Ditch

0.5 Mi. E. of Co. Rd. 23, Logan, CO

Built 1996 Load: 35.6 t ADT: 302

US 6 ML WBND

Fair

Over: STERLING CANAL NO 1

SW SIDE OF STERLING, Logan, CO

Built 1961 Load: 35.7 t ADT: 2,150

US 6 ML

Fair

Over: DRAW

18.5 MI E OF STERLING, Logan, CO

Built 1962 Load: 35.7 t ADT: 1,600

County Road 53

Fair

Over: Larson Draw

0.3 Mi S of Co. Rd 48, Logan, CO

Built 1991 Load: 35.7 t ADT: 48

County Road 67

Fair

Over: South Platte River

1.6 Mi N of I-76, Logan, CO

Built 1996 Load: 35.7 t ADT: 322

I 76 ML EBND

Fair

Over: BNSF RR

35 MI NE OF JCT US 34, Logan, CO

Built 1966 Load: 35.8 t ADT: 4,150

County Road 25

Fair

Over: Pawnee Creek

0.8 Mi N of Co Rd 20., Logan, CO

Built 1989 Load: 35.9 t ADT: 431

County Road 55

Fair

Over: Larson Draw

0.4 Mi N of US Hwy 138, Logan, CO

Built 1987 Load: 36.9 t ADT: 85

US 138 ML

Fair

Over: LEWIS CREEK

6.2 MI NE OF JCT SH 113, Logan, CO

Built 1993 Load: 37.0 t ADT: 690

County Road 55

Fair

Over: South Platte River

1.2 Mi S of Hwy 138, Logan, CO

Built 1990 Load: 37.1 t ADT: 345

County Road 17

Fair

Over: Pawnee Creek

0.6 Mi. N. of Co. Rd. 24, Logan, CO

Built 1990 Load: 37.2 t ADT: 9

County Road 48

Fair

Over: N. Sterling Outlet Canal

0.6 Mi. E of Co. Rd. 41, Logan, CO

Built 1999 Load: 37.9 t ADT: 67

I 76 ML WBND

Fair

Over: COUNTY ROAD 55

31.5 MI NE OF JCT US 34, Logan, CO

Built 1966 Load: 38.1 t ADT: 4,150

I 76 ML EBND

Fair

Over: COUNTY ROAD 55

8 MI E. OF STERLING, Logan, CO

Built 1966 Load: 38.1 t ADT: 4,150

County Road 41

Fair

Over: Trib. of Cedar Creek

0.9 Mi N of Co Rd 36, Logan, CO

Built 1992 Load: 38.6 t ADT: 180

County Road 7.4

Fair

Over: Pawnee Creek

2.8 Mi N of Co Rd 34, Logan, CO

Built 1964 Load: 38.7 t ADT: 21

County Road 40

Fair

Over: N. Sterling Inlet Canal

50 ft E of Co Rd 37, Logan, CO

Built 1986 Load: 39.2 t ADT: 93

County Road 10

Fair

Over: N. Sterling Inlet Canal

1.3 Mi. E. of Co. Rd. 19, Logan, CO

Built 1991 Load: 39.3 t ADT: 81

County Road 79

Fair

Over: N Sterling Outlet Canal

0.3 Mi N of Co Rd 70, Logan, CO

Built 1991 Load: 39.5 t ADT: 60

SH 113 ML

Fair

Over: LEWIS CREEK

10 MI NORTH OF JCT SH 138, Logan, CO

Built 1989 Load: 39.7 t ADT: 1,100

County Road 89

Fair

Over: Harmony No. 1 Canal

0.4 Mi N of Co Rd 64.5, Logan, CO

Built 1992 Load: 40.8 t ADT: 14

County Road 52

Fair

Over: N. Sterling Outlet Canal

0.4 Mi E of Co Rd 47, Logan, CO

Built 2009 Load: 40.9 t ADT: 5

US 138 ML

Fair

Over: CEDAR CREEK

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

Built 1990 Load: 45.7 t ADT: 2,500

County Road 17.7

Fair

Over: N. Sterling Inlet Canal

1.0 Mi. No. of Co. Line, Logan, CO

Built 1995 Load: 46.7 t ADT: 63

CO RD 53

Fair

Over: ILIFF PLATTE VLH DITCH

0.9 MI N of CO RD 46, Logan, CO

Built 2014 Load: 47.3 t ADT: 44

County Road 23

Fair

Over: Pawnee Creek

0.9 Mi N of Co Rd 20.5, Logan, CO

Built 2005 Load: 48.4 t ADT: 20

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