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)

County Road 24

Good

Over: Sterling Ditch No 1

0.1 Mi. E. of US Hwy 6, Logan, CO

Built 1989 Load: 39.6 t ADT: 93

County Road 59

Good

Over: Iliff Platte Valley Ditc

1.0 Mi N of Co Rd 48.5, Logan, CO

Built 1997 Load: 39.6 t ADT: 30

County Road 62

Good

Over: N. Sterling Outlet Canal

0.2 Mi W of Co Rd 63, Logan, CO

Built 2016 Load: 39.9 t ADT: 1

County Road 48

Good

Over: N. Sterling Outlet Canal

0.2 Mi E of Co Rd 41, Logan, CO

Built 1993 Load: 40.8 t ADT: 51

County Road 48.5

Good

Over: Lewis Creek

30 Ft. E of Co Rd 59, Logan, CO

Built 2000 Load: 40.9 t ADT: 4

County Road 62

Good

Over: N Sterling Outlet Canal

0.5 Mi E of Co Rd 63, Logan, CO

Built 2002 Load: 42.0 t ADT: 13

County Road 61

Good

Over: East Lewis Creek

1.1 MI N of Co Rd 52, Logan, CO

Built 1993 Load: 45.9 t ADT: 153

County Road 67

Good

Over: South Platte River

1.7 Mi N of I-76, Logan, CO

Built 2011 Load: 46.2 t ADT: 322

County Road 39

Good

Over: Sterling No 1 Ditch

0.8 Mi N of Co Rd 30, Logan, CO

Built 1988 Load: 46.4 t ADT: 1,662

County Road 66

Good

Over: Harmony No. 1 Canal

0.2 Mi E of Co Rd 89, Logan, CO

Built 1991 Load: 46.6 t ADT: 23

County Road 15.5

Good

Over: N. Sterling Inlet Canal

0.3 Mi N. of Co. Line, Logan, CO

Built 1999 Load: 54.2 t ADT: 21

Platte Street

Good

Over: Sterling Ditch No. 1

.2 Mi E. of Co Rd 37, Logan, CO

Built 2003 Load: 54.2 t ADT: 1,027

County Road 93

Good

Over: N. Sterling Outlet Canal

0.7 Mi N of Co Rd 66, Logan, CO

Built 2003 Load: 58.2 t ADT: 43

County Road 34

Good

Over: N. Sterling Inlet Canal

0.1 Mi. E. of Co. Rd. 35, Logan, CO

Built 1987 Load: 60.0 t ADT: 237

US 6 ML

Good

Over: PAWNEE CREEK OVERFLOW

1.9 MI N OF JCT SH 63, Logan, CO

Built 1941 Load: 62.1 t ADT: 3,700

SH 113 ML

Good

Over: DRAW

11.4 MI NORTH OF JCT SH 1, Logan, CO

Built 2019 Load: 87.5 t ADT: 1,100

County Road 71

Poor

Over: Spring Canyon Creek

0.9 Mi N of Co Rd 64, Logan, CO

Built 1940 Load: 5.7 t ADT: 126

County Road 91

Poor

Over: Trib.N.Fork Frenchman Ck

0.8 Mi N of Co Rd 22, Logan, CO

Built 1940 Load: 8.7 t ADT: 65

County Road 52

Poor

Over: N. Sterling Outlet Canal

1.8 Mi E of Co Rd 45, Logan, CO

Built 1985 Load: 11.1 t ADT: 33

County Road 93

Poor

Over: South Platte River

1.1 Mi N of I-76, Logan, CO

Built 1984 Load: 17.6 t ADT: 62

County Road 48

Poor

Over: N. Sterling Outlet Canal

0.8 Mi E of Co Rd 37, Logan, CO

Built 1985 Load: 19.9 t ADT: 43

US 6 ML EBND

Poor

Over: STERLING CANAL NO 1

4.7 MI NE OF JCT SH 63, Logan, CO

Built 1941 Load: 24.5 t ADT: 2,150

CR 30.7 Vansway Dr

Poor

Over: Sterling No 1 Ditch

0.2 Mi W of Co Rd 39, Logan, CO

Built 1960 Load: 24.5 t ADT: 104

County Road 50

Poor

Over: N. Sterling Outlet Canal

Intersection w/ Co Rd 43, Logan, CO

Built 1982 Load: 26.8 t ADT: 47

I 76 ML EBND

Poor

Over: TWENTY TWO SLOUGH

14 MI S.W. OF STERLING EX, Logan, CO

Built 1964 Load: 30.2 t ADT: 5,500

County Road 52

Poor

Over: N. Sterling Outlet Canal

0.4 Mi E of Co Rd 45, Logan, CO

Built 1985 Load: 32.3 t ADT: 7

County Road 56.3

Poor

Over: Harmony No2 Return Canal

0.4 Mi W of Co Rd 77, Logan, CO

Built 1930 Load: 32.7 t

County Road 66

Poor

Over: Duck Creek

0.9 Mi E of Co Rd 81, Logan, CO

Built 1993 Load: 60.7 t ADT: 44

County Road 59

Structurally Deficient

Over: N. Sterling Outlet Canal

0.3 Mi N of Co Rd 58, Logan, CO

Built 1940 Load: 1.4 t ADT: 6

County Road 83

Structurally Deficient

Over: Duck Creek

0.9 Mi N of Co Rd 64, Logan, CO

Built 1993 Load: 6.6 t ADT: 3

County Road 26

Structurally Deficient

Over: N. Sterling Inlet Canal

0.1 Mi East of Co Rd 29, Logan, CO

Built 1940 Load: 9.0 t ADT: 73

County Road 70

Structurally Deficient

Over: McCracken Draw 2 Butte

1.1 Mi E of Co Rd 81, Logan, CO

Built 1989 Load: 99.9 t ADT: 10

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