Logan County, CO

182 public highway bridges

Logan County Bridge Snapshot

According to the Federal Highway Administration's 2024 National Bridge Inventory, Logan County, Colorado contains 182 public highway bridges. Roughly 29.7% are rated “Good,” 52.7% “Fair,” and 8.8% “Poor.” Poor means the lowest applicable deck, superstructure, substructure, or culvert rating is 4 or below on the 0–9 NBI scale. It is a condition category, not a live safety or closure decision.

Responsible agencies inspect covered bridges on risk-based intervals under current NBIS rules and submit inventory data to FHWA annually. The list below shows every NBI-tracked bridge in the county. Use the “Sort by” controls to change the ordering, and click any row for its reported inspection date, traffic count, and condition fields.

Source: FHWA National Bridge Inventory. See methodology for full definitions.

182
Total Bridges
29.7%
Good
52.7%
Fair
8.8%
Poor Condition

Condition Distribution

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

All Bridges (182)

US 138 ML

Fair

Over: SPRING CANYON CREEK

5.6 MI N OF PROCTOR, Logan, CO

Built 1979 Load: 50.0 t ADT: 450

I 76 ML WBND

Fair

Over: COUNTY ROAD 67

8 MI SW OF CROOK, Logan, CO

Built 1966 Load: 53.5 t ADT: 3,800

I 76 ML EBND

Fair

Over: COUNTY ROAD 67

8 MI SW OF CROOK, Logan, CO

Built 1966 Load: 53.5 t ADT: 3,800

County Road 35

Fair

Over: Pawnee Ditch

20 Ft. N. of Sage Drive, Logan, CO

Built 1992 Load: 53.6 t ADT: 463

County Road 40

Fair

Over: South Platte River

0.7 Mi E of US Hwy 138, Logan, CO

Built 1988 Load: 54.2 t ADT: 127

County Road 29.8

Fair

Over: South Platte River

0.2 Mi. NW of Co Rd 12, Logan, CO

Built 1988 Load: 54.7 t ADT: 66

County Road 29.6

Fair

Over: S. Platte River Overflow

0.5 Mi. NW of Co. Rd. 18, Logan, CO

Built 1988 Load: 56.3 t ADT: 66

County Road 20.5

Fair

Over: N. Sterling Inlet Canal

At Jct with Co Rd 23, Logan, CO

Built 2000 Load: 59.1 t ADT: 83

US 138 ML

Fair

Over: HARMONY DITCH NO 2

14.7 MI NE OF JCT SH 113, Logan, CO

Built 1993 Load: 74.0 t ADT: 450

County Road 55

Fair

Over: Lewis Creek

1.3 Mi N of Co Rd 52, Logan, CO

Built 2004 Load: 96.9 t ADT: 29

County Road 11.1

Fair

Over: Pawnee Creek

1.9 MI N of St Hwy 14, Logan, CO

Built 1998 Load: 99.9 t ADT: 17

County Road 7.4

Fair

Over: Spring Creek

0.1 Mi S of Co Rd 38, Logan, CO

Built 1975 Load: 99.9 t ADT: 21

SH 55 ML

Good

Over: SOUTH PLATTE RIVER

1 MI S OF JCT SH55+US138, Logan, CO

Built 1987 Load: 17.5 t ADT: 460

County Road 55

Good

Over: S. PLATTE RIVER OVERFLOW

1.2 Mi S of US Hwy 138, Logan, CO

Built 2013 Load: 20.1 t ADT: 345

US 138 ML

Good

Over: ILIFF DRAIN DITCH

4 MI N OF JCT SH 113, Logan, CO

Built 1978 Load: 21.7 t ADT: 690

County Road 18

Good

Over: N. Sterling Inlet Canal

25 Ft. W. of Co. Rd. 25, Logan, CO

Built 1987 Load: 21.9 t ADT: 202

County Road 65

Good

Over: N. Sterling Outlet Canal

20 Ft S of Co Rd 64, Logan, CO

Built 1997 Load: 29.3 t ADT: 39

SH 55 ML

Good

Over: SOUTH PLATTE RIVER

1.3 MI S OF JCT SH55+US13, Logan, CO

Built 1987 Load: 29.4 t ADT: 460

SH 55 ML

Good

Over: SOUTH PLATTE RIVER

1.4 MI S OF JCT SH55+US13, Logan, CO

Built 1987 Load: 29.4 t ADT: 460

SH 55 ML

Good

Over: SOUTH PLATTE RIVER

1.5 MI S OF JCT SH55+US13, Logan, CO

Built 1987 Load: 29.4 t ADT: 460

County Road 34

Good

Over: Sterling Ditch No 1

0.4 Mi E of Co Rd 41, Logan, CO

Built 1994 Load: 31.0 t ADT: 313

County Road 16.5

Good

Over: Pawnee Ditch

0.1 Mi. E. of Co. Rd. 29, Logan, CO

Built 1999 Load: 31.5 t ADT: 244

County Road 93

Good

Over: S. Platte River Overflow

1.2 Mi N of I-76, Logan, CO

Built 2002 Load: 31.6 t ADT: 58

County Road 24

Good

Over: Pawnee Ditch

0.1 Mi E of Co Rd 33, Logan, CO

Built 2004 Load: 31.7 t ADT: 285

County Road 91

Good

Over: Trib.N.Fork Frenchman Ck

0.9 Mi N of Co Rd 28, Logan, CO

Built 1997 Load: 31.8 t ADT: 87

SH 6 ML

Good

Over: PAWNEE CREEK

4.9 MI S OF SH 14, Logan, CO

Built 2005 Load: 31.9 t ADT: 3,700

County Road 23

Good

Over: N. Sterling Inlet Canal

1.0 Mi. N. of Co. Rd. 23, Logan, CO

Built 1999 Load: 32.1 t ADT: 114

County Road 68

Good

Over: Harmony No. 1 Canal

At Junct. of Co Rd 95/68, Logan, CO

Built 2001 Load: 32.6 t ADT: 13

County Road 20

Good

Over: Pawnee Ditch

0.7 Mi E of Co Rd 29, Logan, CO

Built 2011 Load: 32.7 t ADT: 33

County Road 78

Good

Over: Cottonwood Creek

0.3 Mi E of Co Rd 67, Logan, CO

Built 1970 Load: 32.7 t ADT: 44

County Road 2.5

Good

Over: Prewitt Outlet Canal

0.5 MI W of US HWY 6, Logan, CO

Built 2011 Load: 33.0 t ADT: 27

County Road 27

Good

Over: Pawnee Ditch

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

Built 2009 Load: 33.5 t ADT: 34

SH 63 ML

Good

Over: SPRINGDALE CANAL

27.4 MI N OF JCT US 34, Logan, CO

Built 1965 Load: 33.8 t ADT: 2,000

County Road 33

Good

Over: Pawnee Creek

1.1 Mi. N. of CR 18, Logan, CO

Built 1991 Load: 34.1 t ADT: 246

County Road 89

Good

Over: Duck Cr / Settlers Ditch

0.4 Mi N of U.S. Hwy 138, Logan, CO

Built 1995 Load: 34.2 t ADT: 43

County Road 71

Good

Over: N. Sterling Outlet Canal

0.7 Mi N of Co Rd 66, Logan, CO

Built 1993 Load: 34.4 t ADT: 99

County Road 85

Good

Over: Harmony No. 1 Canal

1.4 Mi N of US Hwy 138, Logan, CO

Built 2006 Load: 34.4 t ADT: 25

County Road 33.5

Good

Over: N Sterling Inlet Canal

0.2 Mi S of Co Rd 38, Logan, CO

Built 1997 Load: 34.7 t ADT: 33

SH 138 ML

Good

Over: DRAIN DITCH

6.6 MI NE of JCT US 6, Logan, CO

Built 2020 Load: 35.6 t ADT: 2,500

County Road 35

Good

Over: Springdale Ditch

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

Built 1993 Load: 36.5 t ADT: 647

I 76 ML WBND

Good

Over: BNSF RR

38.3 MI SE OF JCT SH 59, Logan, CO

Built 1966 Load: 36.8 t ADT: 4,150

County Road 37

Good

Over: Cedar Creek

0.7 Mi S of Co Rd 46, Logan, CO

Built 1987 Load: 37.1 t ADT: 434

County Road 40

Good

Over: Cedar Creek

0.3 Mi E of US138, Logan, CO

Built 2013 Load: 37.9 t ADT: 133

County Road 46

Good

Over: Iliff Platte Valley Dtch

1.6 Mi. E of St Hwy 113, Logan, CO

Built 2002 Load: 38.4 t ADT: 155

Platte Street

Good

Over: Pioneer Drainage Ditch

At 12th Avenue, Logan, CO

Built 1995 Load: 38.5 t ADT: 1,364

County Road 55

Good

Over: Iliff Platte Valley Ditc

1.4 Mi N of US Hwy 138, Logan, CO

Built 1989 Load: 39.0 t ADT: 126

County Road 71

Good

Over: Harmony No. 2 Ditch

1.1 Mi N of US Hwy 138, Logan, CO

Built 1996 Load: 39.1 t ADT: 168

County Road 25

Good

Over: South Platte River

0.6 MI S of US HWY 6, Logan, CO

Built 1996 Load: 39.4 t ADT: 172

County Road 40

Good

Over: Cedar Creek

1.9 Mi E of Co Rd 43, Logan, CO

Built 1995 Load: 39.5 t ADT: 97

County road 54

Good

Over: N. Sterling Outlet Canal

0.5 Mi W of SH113, Logan, CO

Built 1994 Load: 39.5 t ADT: 9

Read our methodology - how this data is sourced, computed, and verified.

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Data sourced from official public datasets. See our methodology for details. Retrieved and formatted by PlainBridges

Every figure on PlainBridge is rendered directly from federal source data, no number is typed in by an editor. This page draws directly on federal source data, no figure is typed in by an editor. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error.