Total bridges
118
Public highway bridges in Montrose County
County profile · official public datasets
Montrose County, CO
118 public highway bridges tracked in the FHWA National Bridge Inventory: 36.4% rated Good, 61% Fair, 2.5% Poor.
- 118
- Public bridges
- 36.4%
- Good condition
- 2.5%
- Poor condition
The verdict
According to the Federal Highway Administration's 2024 National Bridge Inventory.
Montrose County posts a better-than-median Poor-condition share among rated counties in the state across mid-size county bridge inventory.
- Top 30%
- lowest Poor share in state
- 2.5%
- Poor-condition share
- 118
- public highway bridges
- 1980
- 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.
Montrose County Bridge Snapshot
According to the Federal Highway Administration's 2024 National Bridge Inventory, Montrose County ranks #19 of 64 Colorado counties with at least 5 public highway bridges on Poor-condition share (lower share ranks better; currently 2.5%). Montrose County, Colorado contains 118 public highway bridges. Roughly 36.4% are rated “Good,” 61% “Fair,” and 2.5% “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
36.4%
43 of 118 rated 7-9
Fair condition
61%
72 of 118 rated 5-6
Poor condition
2.5%
3 of 118 rated 4 or below
In-state Poor-share rank
#19 of 64
Among Colorado counties with 5+ bridges, lower share ranks better
Condition distribution
Share of 118 NBI-tracked bridges by lowest applicable component rating.
Good 36.4% (43)
Fair 61% (72)
Poor 2.5% (3)
Montrose County's Poor-condition bridges carry 763 vehicle crossings a day
That is 0.4% of the county's reported daily bridge traffic on 2.5% of its bridges: Poor-condition structures carry less traffic than their share of the inventory. Each Poor bridge averages 254 crossings a day against 1,587 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 118 of 118 bridges in this county that report an average daily traffic count. Source: FHWA National Bridge Inventory, 2024 release.
35.6% of Montrose County's bridges have passed the 50-year mark
42 of the 118 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 36.4% 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 77.3% of the county's Poor-condition bridge traffic
SH 348 ML over IRONSTONE CANAL, built 1963, carries 590 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 3-bridge count understates how much of the daily burden sits on a single crossing.
Share is of the 763 daily crossings on Poor-rated bridges that report a traffic count. Source: FHWA National Bridge Inventory, 2024 release.
When Montrose County's bridges were built
118 bridges with a recorded construction year, grouped by decade
- 1920s 3
1920–1929
3 bridges
- 1930s 4
1930–1939
4 bridges
- 1940s 3
1940–1949
3 bridges
- 1950s
1950–1959
16 bridges
- 1960s 9
1960–1969
9 bridges
- 1970s 10
1970–1979
10 bridges
- 1980s
1980–1989
33 bridges
- 1990s
1990–1999
20 bridges
- 2000s 6
2000–2009
6 bridges
- 2010s 10
2010–2019
10 bridges
- 2020s 4
2020–2029
4 bridges
What this shows Construction peaked in the 1980s, when 33 of the county's bridges still in the inventory were built, which is 28% of those with a recorded year. That cohort is now 35 to 44 years old in the 2024 inventory. Its average build year (1980) matches the Colorado average (1982).
How Montrose County compares with Colorado's closest counties by inventory size
The 5 Colorado counties nearest Montrose County in number of bridges, with their condition splits. Its 2.5% Poor share is the 3rd-lowest of these 6. Its average build year of 1980 against a peer-group mean of 1975 is 5 years newer.
Showing the 5 closest of 63 Colorado counties eligible for comparison.
| County | Bridges | Good | Fair | Poor | Avg. built |
|---|---|---|---|---|---|
| Kit Carson County | 130 | 30.8% | 67.7% | 1.5% | 1970 |
| Lincoln County | 129 | 17.8% | 74.4% | 7.8% | 1977 |
| Montrose County (this page) | 118 | 36.4% | 61% | 2.5% | 1980 |
| Baca County | 106 | 21.7% | 72.6% | 5.7% | 1963 |
| La Plata County | 102 | 54.9% | 43.1% | 2% | 1986 |
| Gunnison County | 100 | 36% | 57% | 7% | 1981 |
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 Montrose 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 Montrose County, both outside Colorado so the neighborhoods are not the same-state size table above.
Similar inventory size
Nearest county inventories outside CO (118 bridges here).
- Autauga County, AL · 118 bridges
- Perry County, AR · 118 bridges
- Rabun County, GA · 118 bridges
- Johnson County, IL · 118 bridges
Similar average build year
Nearest mean year-built outside CO (1980 here).
- Tulsa County, OK · avg 1980 · 1,135 bridges
- Miami-Dade County, FL · avg 1980 · 1,057 bridges
- Pulaski County, AR · avg 1980 · 721 bridges
- McLennan County, TX · avg 1980 · 714 bridges
Source: FHWA National Bridge Inventory, 2024 release. Peers floor at 10 bridges so stub inventories cannot own the match.
Fair-condition bridges (72)
COUNTY ROAD 6400
FairOver: HAPPY CANYON CREEK
2 MI OF US 550, Montrose, CO
Built 1971 Load: 8.3 t ADT: 260
COUNTY ROAD 5800
FairOver: COAL CREEK
JUST S OF JASMINE ROAD, Montrose, CO
Built 1981 Load: 17.0 t ADT: 56
COUNTY ROAD FERN
FairOver: DRY CREEK
3.1 MI SW OF OLATHE, Montrose, CO
Built 1981 Load: 18.1 t ADT: 49
KINIKIN RD
FairOver: SOUTH CANAL
AT CANAL ROAD, Montrose, CO
Built 1986 Load: 18.2 t ADT: 182
SH 92 ML
FairOver: MUDDY CREEK
3 MI SE OF CRAWFORD, Montrose, CO
Built 1936 Load: 18.2 t ADT: 300
COUNTY ROAD 90A
FairOver: SAN MIGUEL RIVER
JUST NW OF CR BB36/PINON, Montrose, CO
Built 1984 Load: 19.0 t ADT: 50
FERN ROAD
FairOver: COAL CREEK
3 MI SW OF OLATHE, Montrose, CO
Built 1985 Load: 20.2 t ADT: 51
US 550 ML
FairOver: CEDAR WASH
S. side of Montrose, Montrose, CO
Built 1936 Load: 20.2 t ADT: 25,000
JAY JAY ROAD
FairOver: SPRING CREEK
6.1 MI NW OF MONTROSE, Montrose, CO
Built 1923 Load: 20.6 t ADT: 1,603
SPRING CREEK RD
FairOver: SUGAR WASH
.9 MI W OF CR 58.75, Montrose, CO
Built 1987 Load: 20.7 t ADT: 62
SH 92 ML
FairOver: ALKALI CREEK
3.7 MI SE OF CRAWFORD, Montrose, CO
Built 1936 Load: 21.2 t ADT: 300
FALCON RD
FairOver: IRONSTONE CANAL
.5 MI E OF CR 5825, Montrose, CO
Built 1983 Load: 21.3 t ADT: 64
SH 348 ML
FairOver: IRONSTONE CANAL
0.8 MI W of Olathe, Montrose, CO
Built 1982 Load: 21.5 t ADT: 2,300
CHURCH AVENUE
FairOver: UNCOMPAHGRE RIVER
.25 MI S OF SH 348, Montrose, CO
Built 1965 Load: 21.7 t ADT: 687
SH 141 ML
FairOver: ATKINSON CREEK
2 MI WEST OF URAVAN, Montrose, CO
Built 1956 Load: 21.8 t ADT: 260
SH 141 ML
FairOver: NATURITA CREEK
JUST EAST OF NATURITA, Montrose, CO
Built 1954 Load: 21.8 t ADT: 1,200
JIG ROAD
FairOver: COAL CREEK
7.3 MI NW OF MONTROSE, Montrose, CO
Built 1982 Load: 22.3 t ADT: 87
SH 141 ML
FairOver: NATURITA CREEK
JUST S OF SH 145 JCT, Montrose, CO
Built 1961 Load: 22.9 t ADT: 1,200
HOLLY ROAD
FairOver: DRY CREEK
5.1 MI SW OF OLATHE, Montrose, CO
Built 1981 Load: 23.0 t ADT: 39
COUNTY ROAD 5600
FairOver: MONTROSE CANAL
4.6 MI SW OF OLATHE, Montrose, CO
Built 1990 Load: 23.0 t ADT: 383
COUNTY ROAD 4A
FairOver: SAN MIGUEL RIVER
.2 MI N OF CR 90, Montrose, CO
Built 1985 Load: 23.1 t ADT: 586
SH 141 ML
FairOver: SAN MIGUEL RIVER
1.3 MI. S. OF URAVAN, Montrose, CO
Built 1952 Load: 23.6 t ADT: 260
US 50 ML
FairOver: CEDAR CREEK
4.3 MI EAST OF MONTROSE, Montrose, CO
Built 1959 Load: 23.6 t ADT: 5,000
COUNTY ROAD 5700
FairOver: COAL CREEK
3 MI SW OF OLATHE, Montrose, CO
Built 1985 Load: 23.9 t ADT: 104
COUNTY ROAD 6100
FairOver: MONTROSE AND DELTA CANAL
.5 MI S OF OAK GROVE, Montrose, CO
Built 1987 Load: 23.9 t ADT: 129
HICKORY ROAD
FairOver: DRY CREEK
4.7 MI SW OF OLATHE, Montrose, CO
Built 1947 Load: 24.3 t ADT: 305
IDA ROAD
FairOver: COAL CREEK
4.3 MI SW OF OLATHE, Montrose, CO
Built 1975 Load: 25.1 t ADT: 98
COUNTY ROAD 6300
FairOver: MONTROSE AND DELTA CANAL
1.2 MI SE OF SH 90, Montrose, CO
Built 1950 Load: 25.6 t ADT: 714
POPULAR ROAD
FairOver: SPRING CREEK
.9 MI SE OF SH 90, Montrose, CO
Built 1988 Load: 25.7 t ADT: 143
SH 348 ML
FairOver: IRONSTONE CANAL
1.6 MI W of Olathe, Montrose, CO
Built 1982 Load: 26.3 t ADT: 2,300
BIG CIMARRON RD
FairOver: CIMARRON RIVER
1.8 MI S OF SH 50, Montrose, CO
Built 1985 Load: 26.6 t ADT: 258
SOLAR ROAD
FairOver: MONTROSE AND DELTA CANAL
1 M W OF US 550, Montrose, CO
Built 1992 Load: 26.9 t ADT: 436
CTY RD UNCOMPAHGRE
FairOver: UNCOMPAHGRE RIVER
0.3 MI E OF US550, Montrose, CO
Built 1960 Load: 26.9 t ADT: 413
LA SALLE ROAD
FairOver: UNCOMPAHGRE RIVER
.5 MI W OF SH 50, Montrose, CO
Built 1991 Load: 27.0 t ADT: 3,399
COUNTY ROAD 6250
FairOver: MONTROSE AND DELTA CANAL
1.1 MI S OF SH 90, Montrose, CO
Built 1925 Load: 27.0 t ADT: 579
SPRING CREEK RD
FairOver: MONTROSE AND DELTA CANAL
.5 MI E OF CR 58.75, Montrose, CO
Built 1940 Load: 27.5 t ADT: 866
OAK GROVE RD
FairOver: MONTROSE AND DELTA CANAL
.5 MI E OF CR 60.00, Montrose, CO
Built 1988 Load: 27.9 t ADT: 282
BEGONIA RD/CR 18
FairOver: DRY CREEK
2.6 MI E OF PEA GREEN COR, Montrose, CO
Built 1976 Load: 28.7 t ADT: 160
SH 97 ML
FairOver: SAN MIGUEL RIVER
NATURITA, Montrose, CO
Built 1957 Load: 29.2 t ADT: 1,400
SH 348 ML
FairOver: UNCOMPAHGRE RIVER
In Olathe, Montrose, CO
Built 1966 Load: 29.5 t ADT: 2,600
GUNNISON ROAD
FairOver: UNCOMPAHGRE RIVER
1 MI W OF SH 50, Montrose, CO
Built 1991 Load: 29.6 t ADT: 146
SH 141 ML
FairOver: DRY CREEK
@ JCT SH 90, Montrose, CO
Built 1972 Load: 29.7 t ADT: 560
SH 141 ML
FairOver: DOLORES RIVER
12.9 MI NW OF URAVAN, Montrose, CO
Built 1958 Load: 30.0 t ADT: 260
BIG CIMARRON RD
FairOver: LITTLE CIMARRON CREEK
.14 MI S OF SH 50, Montrose, CO
Built 1970 Load: 30.4 t ADT: 26
COUNTY ROAD 6530
FairOver: CEDAR CREEK
.2 MI N OF SAN JUAN, Montrose, CO
Built 1988 Load: 30.8 t ADT: 1,981
COUNTY ROAD 93
FairOver: SQUAW CREEK
N OF SH50 MP 112.6, Montrose, CO
Built 1927 Load: 31.8 t ADT: 10
JAY JAY ROAD
FairOver: SELIG CANAL
4.8 MI NW OF MONTROSE, Montrose, CO
Built 1989 Load: 31.9 t ADT: 605
COUNTY ROAD Z26
FairOver: TABEGUACHE CREEK
.3 MI N OF CR V24, Montrose, CO
Built 1970 Load: 32.0 t ADT: 8
HERMAN RD
FairOver: IRONSTONE CANAL
.5 MI W OF S RIVER RD, Montrose, CO
Built 1989 Load: 32.0 t ADT: 27
SANBORN PARK RD
FairOver: HORSEFLY CREEK
20.0 MI E OF REDVALE, Montrose, CO
Built 1961 Load: 33.3 t ADT: 86
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.