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Every bridge in Broomfield County, Colorado

Name: Every bridge in Broomfield County, Colorado
Creator: Bridge Report Card
License: https://creativecommons.org/publicdomain/zero/1.0/

60 inventoried bridges, busiest first

United States Bridge Conditions2025 National Bridge Inventory, FHWACompiled August 20, 2026

Broomfield County, Colorado, has 60 bridges in the 2025 National Bridge Inventory: 30 rated good, 29 fair, and 1 poor (as of August 20, 2026).
This index lists every one of them, busiest first; each links to its own condition record.

Bridge	Built	Vehicles/day	Condition
US 36 Ml over Ramp B & Bikepath	2001	68,000	Good
US 36 Ml over Rock Creek	2015	68,000	Good
US 36 Ml over Flat Iron Circle East	1999	62,000	Good
I 25 Ml Nbnd over County Road 6	2004	54,000	Good
I 25 Ml Nbnd over Nwp	2002	54,000	Good
I25 Ml Sbnd over Weld County Road 6	2004	54,000	Good
SB I-25 over NWP/E470	2003	54,000	Good
SH 121 Ml over US 36 Ml	2014	39,000	Good
US 287 Ml over Flood Control Ditch	1965	29,000	Fair
Northwest Parkway over Rock Creek	1999	27,763	Fair
SH 7 Ml over I 25 Ml	1987	27,000	Good
SH 121 Ml Nbnd over US 287 Ml RR Spur	1972	25,000	Fair
SH 121 Ml Sbnd over US 287 Ml RR Spur	1972	25,000	Poor
Sheridan Boulevard over Local Drainage	1987	24,570	Good
96TH Street over US 36 Ml	1995	21,924	Fair
SH 128 (120TH Ave) over US 36 Ml	2011	19,000	Fair
Nwp EB over Rock Creek	2002	15,000	Fair
Interlocken Loop over Ped. Underpass/Drainage	2000	12,852	Fair
Interlocken Loop over Pedestrian Underpass	2000	12,804	Fair
Lowell Street over Local Drainage	1998	12,221	Good
Interlocken Loop over Pedestrian Underpass	1999	12,139	Fair
NWP Ramp over Rock Creek	2002	12,000	Fair
Nwp EB over BNSF	2002	12,000	Fair
Nwp EB over BNSF	2002	12,000	Fair
Nwp WB over BNSF	2002	12,000	Fair
Nwp WB over BNSF	2002	12,000	Fair
Nwp WB over Rock Creek	2002	12,000	Fair
Nwp WB over WB Dillon Road	2002	12,000	Good
Main Street over Local Drainage	1987	10,974	Fair
160TH Ave over I-25	2003	10,394	Good
Uptown Ave. over US 36 Ml	2014	9,653	Good
Zuni Street over Ped Undrpss/Plaster Rsrv	2002	7,638	Good
Interlocken Loop S over W. Flatiron Crossing	2000	6,609	Good
East 1st Street over Local Drainage	1999	6,265	Fair
Interlocken Loop N over W. Flatiron Crossing Dr.	2000	6,228	Good
W. Flatiron Circle over Rock Cr and IRR Dtch	2000	6,174	Good
Interlocken Blvd. over Ped. Underpass/Drainage	1999	5,799	Fair
Sheridan Pkwy NB over Local Drainage	2009	5,409	Good
Lowell Blvd. over Nwp	2002	5,282	Fair
Sheridan Pkwy SB over Local Drainage	2009	5,192	Good
Huron Street over Nwp	2002	5,000	Fair
Sheridan Parkway over Nwp	2002	5,000	Fair
Midway Blvd over Rock Creek Overflow	2006	4,495	Fair
Lowell Blvd SB over Lowell Channel	2005	4,426	Good
Lowell Blvd NB over Lowell Channel	2005	4,296	Good
120TH Street over Nwp	2002	4,189	Fair
West Sixth Avenue over Graves and Dennison Dtch	1985	3,667	Fair
Chase Street over Local Drainage	2000	3,372	Fair
NWP Ramp over WB Dillon Road	2002	2,500	Fair
Nwp EB over WB Dillon Road	2002	2,500	Fair
WB NWP Ramp over Rock Creek	2002	2,300	Good
Willow Run Pkwy over Local Drainage	1996	1,889	Good
Willow Run Pkwy over Local Drainage	1999	1,577	Good
Ramp H over I-25 and NWP	2003	1,500	Good
Broadlands Drive over Local Drainage	1997	1,465	Good
Kirk Street over Local Drainage	1999	1,384	Good
Hazel Street over Local Drainage	1985	1,346	Fair
123rd Place over Local Drainage	1996	1,232	Good
Ramp B over I-25 and NWP	2003	820	Good
Briarwood Drive over Local Drainage	1987	290	Fair

Source: FHWA National Bridge Inventory, 2025.

Broomfield County bridge conditions · Colorado bridges by county.

Background: how bridge ratings work · what "poor" and "structurally deficient" actually mean · how often bridges are inspected.