Total Bridges
8,965
Public highway bridges in Colorado
State profile · Below national median SD
Colorado bridge safety
Condition ratings, load ratings, and structural-deficiency data for every public highway bridge in Colorado — drawn straight from the FHWA National Bridge Inventory.
- 8,965
- Public bridges
- 32.0%
- Good condition
- 4.3%
- Poor condition
- 4.3%
- Structurally deficient
Good Condition
32.0%
2,865 bridges rated 7-9
-18.0pp vs 50% benchmark
Poor Condition
4.3%
387 bridges rated 0-4
Structurally Deficient
4.3%
387 bridges flagged for repair priority
-2.7pp vs national avg 7.0%
Colorado vs national bridge condition
Colorado — Good condition share 32.0%
National avg
Share of bridges rated 7-9 on the FHWA 0-9 scale (deck, superstructure, substructure all good).
Colorado — Structurally deficient share 14.4%
National avg
Lower is better. Bar maxes at 30% (worst-state ceiling). National average sits at 7.0%.
Condition Distribution
Bridge inventory deck-condition mix — Colorado (FHWA NBI)
Counties (64)
Adams 535 Alamosa 16 Arapahoe 391 Archuleta 44 Baca 106 Bent 68 Boulder 311 Broomfield 66 Chaffee 84 Cheyenne 61 Clear Creek 77 Conejos 62 Costilla 39 Crowley 28 Custer 20 Delta 64 Denver 458 Dolores 28 Douglas 263 Eagle 174 El Paso 686 Elbert 85 Fremont 137 Garfield 167 Gilpin 19 Grand 88 Gunnison 100 Hinsdale 31 Huerfano 94 Jackson 47 Jefferson 464 Kiowa 31 Kit Carson 130 La Plata 102 Lake 17 Larimer 559 Las Animas 207 Lincoln 129 Logan 182 Mesa 319 Mineral 26 Moffat 80 Montezuma 61 Montrose 118 Morgan 192 Otero 195 Ouray 39 Park 55 Phillips 27 Pitkin 62 Prowers 137 Pueblo 264 Rio Blanco 54 Rio Grande 71 Routt 96 Saguache 41 San Juan 13 San Miguel 59 Sedgwick 64 Summit 57 Teller 27 Washington 75 Weld 614 Yuma 49
Colorado vs nearby ranks
Adjacent states on the structurally deficient leaderboard (lower share = better)
States are ranked by share of bridges flagged structurally deficient — the FHWA classification for any span where deck, superstructure, or substructure carries a condition rating of 4 or below. Lower percentages indicate stronger maintenance funding and inspection follow-through. States here sit immediately above and below Colorado on the same metric.
Bridges Needing Most Attention in Colorado
Six lowest-condition bridges in Colorado, ranked by composite NBI rating. Each is inspected at least every 24 months.
County Road 59
Structurally DeficientOver: N. Sterling Outlet Canal
0.3 Mi N of Co Rd 58, Logan, CO
Built 1940 Load: 1.4 t ADT: 6
COTTONWOOD ST
Structurally DeficientOver: NORTH CRESTONE CREEK
IN TOWN OF CRESTONE, Saguache, CO
Built 1991 Load: 2.3 t ADT: 65
CO Rd 32
Structurally DeficientOver: Feeder Ditch
0.28 MI E of Co Rd 75, Las Animas, CO
Built 1970 Load: 2.7 t ADT: 7
POTOMAC STREET
Structurally DeficientOver: OBRIAN CANAL
0.2 MILE NORTH OF SH 2, Adams, CO
Built 1940 Load: 3.8 t ADT: 190
88TH AVENUE
Structurally DeficientOver: KIOWA CREEK
0.1 MI E OF WOLF CREEK RD, Adams, CO
Built 1950 Load: 4.5 t ADT: 532
IRR# CO RD 500
PoorOver: CAT CREEK
NEAR CAMADO, Archuleta, CO
Built 1927 Load: 4.7 t ADT: 36
All Bridges in Colorado
US 36 WBND SPUR
UnknownOver: US 36 SPUR/BASELINE RD
S end of BOULDER, Boulder, CO
Built 1993 ADT: 30,000
SH 157 ML
UnknownOver: SH 119 ML
IN BOULDER, Boulder, CO
Built 1988 ADT: 29,000
47TH STREET
UnknownOver: SH 157 ML
NEAR SH 119 IN BOULDER, Boulder, CO
Built 1989 ADT: 4,761
TABLE MESA DRIVE
UnknownOver: US 36 ML
IN BOULDER, Boulder, CO
Built 1951 ADT: 17,183
SH 157 RAMP
UnknownOver: US 36 ML
IN BOULDER, Boulder, CO
Built 1971 ADT: 72,000
SH170 ML(McCaslin)
UnknownOver: US 36 ML
3.9 MI E OF JCT SH 93, Boulder, CO
Built 1983 ADT: 72,000
EMMA ST.
UnknownOver: US 287 ML
IN LAFAYETTE, Boulder, CO
Built 1994 ADT: 3,673
CHERRYVALE ROAD
UnknownOver: SH 36 ML
1.4 MI E OF JCT SH 157, Boulder, CO
Built 2009 ADT: 88,000
WB US 36 ON RAMP
UnknownOver: WB BUS RAMP/BIKE PATH
MCCASLIN and US 36, Boulder, CO
Built 2016
EB US 36 OFF RAMP
UnknownOver: EB BUS RAMP
McCASLIN and US 36, Boulder, CO
Built 2016
Pratt Parkway
UnknownOver: BNRR and 1st Avenue
0.2 Mi N of Boston Ave, Boulder, CO
Built 1980 ADT: 13,813
Ramp B
UnknownOver: I-25 and NWP
I25 NB ramp to NWP WB, Broomfield, CO
Built 2003 ADT: 85,600
Ramp H
UnknownOver: I-25 and NWP
EB NWP ramp to NB I25, Broomfield, CO
Built 2003 ADT: 85,600
Interlocken Loop N
UnknownOver: W. Flatiron Crossing Dr.
400 Ft N. of Interlocken, Broomfield, CO
Built 2000 ADT: 19,784
Interlocken Loop S
UnknownOver: W. Flatiron Crossing
400 Ft N. of Interlocken, Broomfield, CO
Built 2000 ADT: 24,821
SH 121 ML NBND
UnknownOver: US 287 ML, RR SPUR
IN BROOMFIELD, Broomfield, CO
Built 1972 ADT: 27,000
SH 121 ML SBND
UnknownOver: US 287 ML, RR SPUR
IN BROOMFIELD, Broomfield, CO
Built 1972 ADT: 27,000
104TH AVE/CHURCH R
UnknownOver: US 36 ML
2.4 MI SE BOULDER-JEFF CL, Broomfield, CO
Built 1991 ADT: 34,112
96TH STREET
UnknownOver: US 36 ML
IN BROOMFIELD, Broomfield, CO
Built 1995 ADT: 26,086
88TH ST.
UnknownOver: US 36 ML
3.5 MI W. OF SH 121, Broomfield, CO
Built 2000 ADT: 9,559
SH 128 (120TH AVE)
UnknownOver: US 36 ML
120TH AVE AND US 36, Broomfield, CO
Built 2011 ADT: 82,000
SH 121 ML
UnknownOver: US 36 ML
IN BROOMFIELD, Broomfield, CO
Built 2014 ADT: 82,000
UPTOWN AVE.
UnknownOver: US 36 ML
1.5 MI S of SH128, Broomfield, CO
Built 2014 ADT: 10,491
I 25 ML NBND
UnknownOver: NWP
JUST S OF 160TH AVE, Broomfield, CO
Built 2002
160TH AVE
UnknownOver: I-25
Just N of NWPkwy-470, Broomfield, CO
Built 2003 ADT: 3,949
SB I-25
UnknownOver: NWP/E470
Just South of 160th Ave, Broomfield, CO
Built 2003
Huron Street
UnknownOver: NWP
0.50 MI FROM I25, Broomfield, CO
Built 2002 ADT: 15,000
Sheridan Parkway
UnknownOver: NWP
1.64 MI FROM I-25, Broomfield, CO
Built 2002 ADT: 4,400
Lowell Blvd.
UnknownOver: NWP
2.56 MILES FROM I-25, Broomfield, CO
Built 2002 ADT: 15,000
120TH STREET
UnknownOver: NWP
4.77 MI FROM I-25, Broomfield, CO
Built 2002 ADT: 4,500
NWP EB
UnknownOver: US 287
5.95 FROM I-25, Broomfield, CO
Built 2002 ADT: 40,300
NWP WB
UnknownOver: US 287
5.95 FROM I-25, Broomfield, CO
Built 2002 ADT: 40,300
104TH Street
UnknownOver: NWP
6.98 MI FROM I-25, Broomfield, CO
Built 2002 ADT: 12,000
SH 291 ML
UnknownOver: CR 150, ARKANSAS RIVER
1.3 MI NW OF SALIDA, Chaffee, CO
Built 1959 ADT: 1,000
COUNTY ROADS
UnknownOver: I 70 ML
3.3 MI E OF JCT US 40, Clear Creek, CO
Built 1965 ADT: 790
US 40 ML
UnknownOver: I 70 ML, CLEAR CREEK
EMPIRE JNCTN., Clear Creek, CO
Built 1965 ADT: 37,000
COUNTY ROAD 306
UnknownOver: I 70 ML, CLEAR CREEK
3.7 MI NO OF GEORGETOWN I, Clear Creek, CO
Built 1965 ADT: 660
I 70 ML WBND
UnknownOver: COUNTY ROAD
5 MI E OF EISENHOWER TUNN, Clear Creek, CO
Built 1972 ADT: 100
I 70 ML WBND
UnknownOver: US 6 ML
.75 MI E OF EISENHOWER TN, Clear Creek, CO
Built 1964 ADT: 1,200
I 70 EB RAMP
UnknownOver: US 6 ML
1 MI E OF EISENHOWER TUNN, Clear Creek, CO
Built 1979 ADT: 1,200
COUNTY ROAD 321
UnknownOver: I 70 ML
8 MI E OF EISENHOWER TUNN, Clear Creek, CO
Built 1971 ADT: 175
COUNTY ROAD 323
UnknownOver: I 70 ML
10 MI E OF EISENHOWER TUN, Clear Creek, CO
Built 1971 ADT: 36,000
SH 103 ML
UnknownOver: I 70 ML
IN IDAHO SPRINGS, Clear Creek, CO
Built 2015 ADT: 50,000
I 70 ML
UnknownOver: CITY STREET
AT GEORGETOWN, Clear Creek, CO
Built 1989 ADT: 1,000
I 70 ML
UnknownOver: I 70 BUSS RT
7.4 MI E OF JCT US 40, Clear Creek, CO
Built 1958 ADT: 1,600
I 70(BUSINESS RT)
UnknownOver: I 70 ML
1.5 MI E OF JCT SH 103, Clear Creek, CO
Built 2016 ADT: 42,000
I 70 ML WBND
UnknownOver: US 6, CLEAR CREEK
8.7 MI W OF JCT SH 74, Clear Creek, CO
Built 1959 ADT: 3,700
COUNTY ROAD 182.1
UnknownOver: I 70 ML
3.8 MI E OF JCT US 6, Clear Creek, CO
Built 1973 ADT: 1,500
NB SPEER BLVD
UnknownOver: S PLATTE RVR/RR/WATER ST
NB SPEER NEAR I-25 EXIT, Denver, CO
Built 1999 ADT: 2,000
SB SPEER BLVD
UnknownOver: S PLATTE RVR/RR/WATER ST
SB SPEER NEAR I-25 EXIT, Denver, CO
Built 2000 ADT: 1,800
Showing 201-250 of 8,965 bridges
Data sourced from the FHWA National Bridge Inventory (NBI), latest released cycle. See our methodology for details. Retrieved and formatted by PlainBridges Editorial.
Disclaimer: This information is provided for informational purposes only and does not constitute professional advice. Data is sourced from the FHWA National Bridge Inventory (NBI). A "structurally deficient" rating is a repair-priority signal, not a closure or unsafe-to-cross designation. Consult a qualified civil engineer before making decisions based on this data.
Understanding Bridge Conditions
How FHWA rates bridge condition on a 0-9 scale.
Check Your Daily Bridges
How to look up bridge condition data for bridges on your route.
Read our methodology — how this data is sourced, computed, and verified.
| Publisher | Kiznis Studio |
| Sources | FHWA National Bridge Inventory, public U.S. government datasets |