Total bridges
614
Public highway bridges in Weld County
County profile · official public datasets
Weld County, CO
614 public highway bridges tracked in the FHWA National Bridge Inventory: 36.8% rated Good, 58.5% Fair, 4.7% Poor.
- 614
- Public bridges
- 36.8%
- Good condition
- 4.7%
- Poor condition
The verdict
According to the Federal Highway Administration's 2024 National Bridge Inventory.
Weld County posts a better-than-median Poor-condition share among rated counties in the state across large county bridge inventory.
- Top 50%
- lowest Poor share in state
- 4.7%
- Poor-condition share
- 614
- public highway bridges
- 1986
- avg year built
Poor is an FHWA condition category from the lowest applicable component rating (4 or below), not a live crossing-safety or closure decision. Rankings cover counties with at least five public highway bridges.
Weld County Bridge Snapshot
According to the Federal Highway Administration's 2024 National Bridge Inventory, Weld County ranks #32 of 64 Colorado counties with at least 5 public highway bridges on Poor-condition share (lower share ranks better; currently 4.7%). Weld County, Colorado contains 614 public highway bridges. Roughly 36.8% are rated “Good,” 58.5% “Fair,” and 4.7% “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.
Good condition
36.8%
226 of 614 rated 7-9
Fair condition
58.5%
359 of 614 rated 5-6
Poor condition
4.7%
29 of 614 rated 4 or below
In-state Poor-share rank
#32 of 64
Among Colorado counties with 5+ bridges, lower share ranks better
Condition distribution
Share of 614 NBI-tracked bridges by lowest applicable component rating.
Good 36.8% (226)
Fair 58.5% (359)
Poor 4.7% (29)
Weld County's Poor-condition bridges carry 120,310 vehicle crossings a day
That is 3.1% of the county's reported daily bridge traffic on 4.7% of its bridges: Poor-condition structures carry less traffic than their share of the inventory. Each Poor bridge averages 4,149 crossings a day against 8,457 for a Good-condition one. A Poor rating is a condition category, not a closure or a live safety judgement; it means the lowest applicable component rating is 4 or below.
Computed over the 614 of 614 bridges in this county that report an average daily traffic count. Source: FHWA National Bridge Inventory, 2024 release.
30.5% of Weld County's bridges have passed the 50-year mark
187 of the 614 bridges with a recorded construction year were built in 1974 or earlier. Age alone is not a defect: a well-maintained older bridge can rate Good, and 36.8% of this county's inventory does. Even so, this older cohort is the population from which future Poor ratings are drawn, which is why the age profile below matters alongside the condition split above.
Cutoff derives from the 2024 release year minus a 50-year design life. Source: FHWA National Bridge Inventory, 2024 release.
One structure carries 13.7% of the county's Poor-condition bridge traffic
US 34 ML WBND over US 85 BUS RT, built 1962, carries 16,500 vehicles a day, the most of any Poor-rated structure here. The county's Poor-condition exposure is concentrated rather than evenly spread, so the 29-bridge count understates how much of the daily burden sits on a single crossing.
Share is of the 120,310 daily crossings on Poor-rated bridges that report a traffic count. Source: FHWA National Bridge Inventory, 2024 release.
When Weld County's bridges were built
614 bridges with a recorded construction year, grouped by decade
- 1930s 9
1930–1939
9 bridges
- 1940s 5
1940–1949
5 bridges
- 1950s 39
1950–1959
39 bridges
- 1960s
1960–1969
101 bridges
- 1970s 53
1970–1979
53 bridges
- 1980s
1980–1989
96 bridges
- 1990s
1990–1999
135 bridges
- 2000s
2000–2009
98 bridges
- 2010s 51
2010–2019
51 bridges
- 2020s 27
2020–2029
27 bridges
What this shows Construction peaked in the 1990s, when 135 of the county's bridges still in the inventory were built, which is 22% of those with a recorded year. That cohort is now 25 to 34 years old in the 2024 inventory. Its average build year (1986) matches the Colorado average (1982).
How Weld County compares with Colorado's closest counties by inventory size
The 5 Colorado counties nearest Weld County in number of bridges, with their condition splits. Its 4.7% Poor share is the 4th-lowest of these 6. Its average build year of 1986 against a peer-group mean of 1987 is in line with the group.
Showing the 5 closest of 63 Colorado counties eligible for comparison.
| County | Bridges | Good | Fair | Poor | Avg. built |
|---|---|---|---|---|---|
| El Paso County | 686 | 31.3% | 65.5% | 3.2% | 1984 |
| Weld County (this page) | 614 | 36.8% | 58.5% | 4.7% | 1986 |
| Larimer County | 559 | 49% | 49% | 2% | 1987 |
| Adams County | 535 | 43.9% | 49.2% | 6.9% | 1990 |
| Jefferson County | 464 | 33.8% | 59.9% | 6.3% | 1984 |
| Denver County | 458 | 41.9% | 56.3% | 1.7% | 1991 |
Each share is of that county's own total tracked bridges; peers are the counties with 5 or more bridges whose inventory size is closest to Weld County's. Source: FHWA National Bridge Inventory, 2024 release.
Nationwide counties with similar inventory size or average build year
Two NBI-derived peer sets for Weld County, both outside Colorado so the neighborhoods are not the same-state size table above.
Similar inventory size
Nearest county inventories outside CO (614 bridges here).
- Monroe County, NY · 615 bridges
- Allen County, IN · 613 bridges
- Mobile County, AL · 612 bridges
- Contra Costa County, CA · 618 bridges
Similar average build year
Nearest mean year-built outside CO (1986 here).
- El Paso County, TX · avg 1986 · 783 bridges
- Caddo County, LA · avg 1986 · 682 bridges
- Polk County, IA · avg 1986 · 545 bridges
- Canadian County, OK · avg 1986 · 493 bridges
Source: FHWA National Bridge Inventory, 2024 release. Peers floor at 10 bridges so stub inventories cannot own the match.
Fair-condition bridges (359)
County Road 106
FairOver: Little Owl Creek
0.5 Mi E of Co Rd 35, Weld, CO
Built 1992 Load: 39.5 t ADT: 5
County Road 2
FairOver: Neres Canal
0.9 Mi E of CR 39, Weld, CO
Built 2007 Load: 39.6 t ADT: 768
US 34 ML WBND
FairOver: SOUTH PLATTE RIVER
0.8 MI W OF JCT SH 34-D, Weld, CO
Built 1976 Load: 39.8 t ADT: 8,500
County Road 53
FairOver: Cache La Poudre Canal
0.1 Mi N of Co Rd 66, Weld, CO
Built 2004 Load: 40.2 t ADT: 520
County Road 100
FairOver: Coal Creek
2.7 Mi E of Co Rd 49, Weld, CO
Built 1991 Load: 40.2 t ADT: 13
County Road 26
FairOver: Last Chance Ditch
0.8 Mi E of Co Rd 13, Weld, CO
Built 2003 Load: 40.4 t ADT: 1,052
County Road 54
FairOver: Latham Ditch
0.5 Mi E of Co Rd 43, Weld, CO
Built 1998 Load: 40.5 t ADT: 2,042
County Road 4.5
FairOver: Brighton Ditch
0.5 Mi S of Co Rd 6, Weld, CO
Built 1999 Load: 40.8 t ADT: 301
County Road 18
FairOver: Sand Creek
0.7 Mi E of Co Rd 71, Weld, CO
Built 2000 Load: 40.9 t ADT: 164
County Road 74
FairOver: Lone Tree Creek
100 Ft W of Co Rd 43, Weld, CO
Built 1965 Load: 41.1 t ADT: 806
US 85 ML SBND
FairOver: CO.RD 39.5 UP RR
N END OF GREELEY, Weld, CO
Built 1962 Load: 41.3 t ADT: 4,750
I 76 ML WBND
FairOver: LOST CREEK
JUST E OF ROGGEN, Weld, CO
Built 1959 Load: 41.3 t ADT: 6,000
I 76 ML EBND
FairOver: LOST CREEK
JUST NE OF ROGGEN, Weld, CO
Built 1959 Load: 41.3 t ADT: 6,000
US 34 ML
FairOver: LOVELAND-GREELEY CANAL
3.8 MI W OF JCT US 85-C, Weld, CO
Built 1967 Load: 41.5 t ADT: 32,000
US 34 ML
FairOver: SHEEP DRAW
6 MI W OF GREELEY, Weld, CO
Built 1999 Load: 41.9 t ADT: 26,000
SH 52 ML
FairOver: LITTLE DRY CREEK
5.3 MI E OF JCT I 25, Weld, CO
Built 1959 Load: 42.0 t ADT: 13,000
I 76 ML EBND
FairOver: COUNTY ROAD 53
4.9 MI NE OF JCT SH 52, Weld, CO
Built 1961 Load: 42.0 t ADT: 8,000
County Road 102
FairOver: Little Owl Creek
0.65 Mi E of Co Rd 39, Weld, CO
Built 1987 Load: 42.2 t ADT: 5
SH 52 ML
FairOver: LOWER BOULDER DITCH
0.6 MI E OF JCT I 25, Weld, CO
Built 1960 Load: 42.5 t ADT: 18,000
County Road 36
FairOver: Platte Valley Canal
0.8 Mi E of Co Rd 29, Weld, CO
Built 1981 Load: 42.8 t ADT: 103
County Road 31
FairOver: Pierce Lateral Canal
0.1 Mi N of Co Rd 88.75, Weld, CO
Built 1989 Load: 43.1 t ADT: 108
County Rd 13
FairOver: Unnamed Creek
0.95 Mi N of Co Rd 48, Weld, CO
Built 1999 Load: 43.5 t ADT: 3,820
County Road 29
FairOver: New Cache La Poudre Cana
0.1 Mi N of St Hwy 392, Weld, CO
Built 1997 Load: 43.7 t ADT: 1,172
7th Avenue
FairOver: Greeley No. 3 Ditch
7th Ave. and 17th Street, Weld, CO
Built 2001 Load: 43.8 t ADT: 1,253
12th Ave/14th St
FairOver: Greeley No. 3 Ditch
12th Ave/14th Street, Weld, CO
Built 1986 Load: 44.5 t ADT: 2,263
10 Ave/15 St
FairOver: Greeley No. 3 Ditch
At Int 10th/15 Street, Weld, CO
Built 1985 Load: 44.7 t ADT: 2,309
I 76 ML WBND
FairOver: COUNTY ROAD 53
2.5 MI W of Keenesburg, Weld, CO
Built 1961 Load: 44.8 t ADT: 8,000
County Road 2
FairOver: Denver Hudson Canal
1.2 Mi E of CR 39, Weld, CO
Built 2007 Load: 45.8 t ADT: 613
16th St/9th Ave.
FairOver: Greeley No. 3 Ditch
16th St/9th Avenue, Weld, CO
Built 1985 Load: 46.1 t ADT: 14,200
SH 52 ML
FairOver: LOWER BOULDER CANAL
4.1 MI E OF JCT US 287, Weld, CO
Built 1963 Load: 46.4 t ADT: 14,000
SH 257 ML
FairOver: DRAW
1.8 MI NO OF JCT US 34, Weld, CO
Built 1963 Load: 47.3 t ADT: 12,000
US 34-D EBND
FairOver: US 34 ML
6 MI E OF JCT I-25, Weld, CO
Built 1977 Load: 47.4 t ADT: 7,000
County Road 50
FairOver: Local Drainage
0.1 Mi E of Co Rd 13, Weld, CO
Built 1999 Load: 47.5 t ADT: 4,017
US 34 ML
FairOver: LOVELAND-GREELEY CANAL
2 MI W OF GREELEY, Weld, CO
Built 1967 Load: 47.6 t ADT: 32,000
County Road 54
FairOver: Latham Ditch
1.8 Mi E of Co Rd 41, Weld, CO
Built 1986 Load: 49.9 t ADT: 2,613
County Road 4
FairOver: Big Dry Creek
0.6 Mi. E. of Co. Rd. 15, Weld, CO
Built 2003 Load: 51.2 t ADT: 58
US 85 ML
FairOver: OWL CREEK
5 MI S OF WYOMING S.L., Weld, CO
Built 2011 Load: 51.5 t ADT: 3,000
I 25 ML SBND
FairOver: SH 60 ML
2.1 MI SO OF JCT SH 402, Weld, CO
Built 2022 Load: 51.8 t ADT: 2,300
I 25 ML NBND
FairOver: SH 119 ML
DEL CAMINO INTRCHG, Weld, CO
Built 1998 Load: 53.4 t ADT: 45,500
I 25 ML SBND
FairOver: SH 119 ML
3 MI SO OF JCT SH 66, Weld, CO
Built 1998 Load: 53.4 t ADT: 45,500
I 76 ML WBND
FairOver: COUNTY ROADS 386 24.4
1.3 MI NE OF ROGGEN, Weld, CO
Built 1959 Load: 54.2 t ADT: 6,000
I 76 ML EBND
FairOver: COUNTY ROADS 386 24.4
1.3 MI NE OF ROGGEN, Weld, CO
Built 1959 Load: 54.8 t ADT: 6,000
I 76 ML EBND
FairOver: COUNTY ROAD 49
2.8 MI NE OF JCT SH 52, Weld, CO
Built 2000 Load: 56.2 t ADT: 10,500
I 76 ML WBND
FairOver: BOX ELDER CRK FRM. ACCES
27.9 MI SW OF JCT SH 144, Weld, CO
Built 2000 Load: 57.8 t ADT: 10,500
SH 52 ML
FairOver: LOWER BOULDER CANAL
3.7 MI E OF JCT US 287, Weld, CO
Built 1963 Load: 58.0 t ADT: 14,000
US 34 ML
FairOver: LOVELAND-GREELEY CANAL
2.9 MI E OF JCT I 25, Weld, CO
Built 1934 Load: 58.4 t ADT: 43,000
SH 52 ML
FairOver: LOWER BOULDER CANAL
4.5 MI E OF JCT US 287, Weld, CO
Built 1963 Load: 62.6 t ADT: 14,000
US 34 ML
FairOver: BOX ELDER CREEK
9 MI E OF JCT 34D GREELEY, Weld, CO
Built 1999 Load: 62.7 t ADT: 7,000
SH 14 ML
FairOver: OWL CREEK
5 MI E OF JCT US 85, Weld, CO
Built 1992 Load: 65.9 t ADT: 2,300
SH 14 ML
FairOver: EATON DITCH
5.2 MI E OF US85 / AULT, Weld, CO
Built 1992 Load: 69.3 t ADT: 2,300
Read our methodology - how this data is sourced, computed, and verified.
Related
Data sourced from official public datasets. See our methodology for details. Retrieved and formatted by PlainBridges
Every figure on PlainBridges 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. NBI condition categories reflect the latest reported inventory record, not a live safety, closure, or travel decision.