Total bridges
80
Public highway bridges in Moffat County
County profile · official public datasets
Moffat County, CO
80 public highway bridges tracked in the FHWA National Bridge Inventory: 28.8% rated Good, 65% Fair, 6.3% Poor.
- 80
- Public bridges
- 28.8%
- Good condition
- 6.3%
- Poor condition
The verdict
According to the Federal Highway Administration's 2024 National Bridge Inventory.
Moffat County pairs a higher-than-median Poor-condition share among rated counties in the state with an older average build year than the state inventory.
- 42nd
- of 64 on Poor share
- 6.3%
- Poor-condition share
- 80
- public highway bridges
- 1973
- 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.
Moffat County Bridge Snapshot
According to the Federal Highway Administration's 2024 National Bridge Inventory, Moffat County ranks #42 of 64 Colorado counties with at least 5 public highway bridges on Poor-condition share (lower share ranks better; currently 6.3%). Moffat County, Colorado contains 80 public highway bridges. Roughly 28.8% are rated “Good,” 65% “Fair,” and 6.3% “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
28.8%
23 of 80 rated 7-9
Fair condition
65%
52 of 80 rated 5-6
Poor condition
6.3%
5 of 80 rated 4 or below
In-state Poor-share rank
#42 of 64
Among Colorado counties with 5+ bridges, lower share ranks better
Condition distribution
Share of 80 NBI-tracked bridges by lowest applicable component rating.
Good 28.8% (23)
Fair 65% (52)
Poor 6.3% (5)
Moffat County's Poor-condition bridges carry 1,874 vehicle crossings a day
That is 3.2% of the county's reported daily bridge traffic on 6.3% of its bridges: Poor-condition structures carry less traffic than their share of the inventory. Each Poor bridge averages 375 crossings a day against 1,060 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 79 of 80 bridges in this county that report an average daily traffic count. Source: FHWA National Bridge Inventory, 2024 release.
43.8% of Moffat County's bridges have passed the 50-year mark
35 of the 80 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 28.8% 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 80% of the county's Poor-condition bridge traffic
SH 13 ML over FORTIFICATION CREEK, built 1982, carries 1,500 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 5-bridge count understates how much of the daily burden sits on a single crossing.
Share is of the 1,874 daily crossings on Poor-rated bridges that report a traffic count. Source: FHWA National Bridge Inventory, 2024 release.
When Moffat County's bridges were built
80 bridges with a recorded construction year, grouped by decade
- 1930s 6
1930–1939
6 bridges
- 1940s 4
1940–1949
4 bridges
- 1950s
1950–1959
13 bridges
- 1960s 7
1960–1969
7 bridges
- 1970s
1970–1979
13 bridges
- 1980s
1980–1989
23 bridges
- 1990s 9
1990–1999
9 bridges
- 2000s 4
2000–2009
4 bridges
- 2020s 1
2020–2029
1 bridges
What this shows Construction peaked in the 1980s, when 23 of the county's bridges still in the inventory were built, which is 28.8% of those with a recorded year. That cohort is now 35 to 44 years old in the 2024 inventory. Its average build year is 1973, 9 years older than the Colorado average of 1982.
How Moffat County compares with Colorado's closest counties by inventory size
The 5 Colorado counties nearest Moffat County in number of bridges, with their condition splits. Its 6.3% Poor share is the 4th-lowest of these 6. Its average build year of 1973 against a peer-group mean of 1976 is in line with the group.
Showing the 5 closest of 63 Colorado counties eligible for comparison.
| County | Bridges | Good | Fair | Poor | Avg. built |
|---|---|---|---|---|---|
| Grand County | 88 | 43.2% | 51.1% | 5.7% | 1986 |
| Elbert County | 85 | 11.8% | 82.4% | 5.9% | 1968 |
| Chaffee County | 84 | 28.6% | 65.5% | 6% | 1973 |
| Moffat County (this page) | 80 | 28.8% | 65% | 6.3% | 1973 |
| Clear Creek County | 77 | 36.4% | 57.1% | 6.5% | 1978 |
| Washington County | 75 | 16% | 77.3% | 6.7% | 1975 |
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 Moffat 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 Moffat County, both outside Colorado so the neighborhoods are not the same-state size table above.
Similar inventory size
Nearest county inventories outside CO (80 bridges here).
- Burke County, GA · 80 bridges
- Gooding County, ID · 80 bridges
- Madison County, ID · 80 bridges
- Washington County, ID · 80 bridges
Similar average build year
Nearest mean year-built outside CO (1973 here).
- Jefferson County, AL · avg 1973 · 1,068 bridges
- Erie County, NY · avg 1973 · 906 bridges
- Davidson County, TN · avg 1973 · 832 bridges
- Lancaster County, PA · avg 1973 · 801 bridges
Source: FHWA National Bridge Inventory, 2024 release. Peers floor at 10 bridges so stub inventories cannot own the match.
Good-condition bridges (23)
Seventh Street
GoodOver: Fortification Creek
50 Ft W of Lincoln St., Moffat, CO
Built 1985 Load: 17.5 t ADT: 2,414
US 40 ML
GoodOver: BIG GULCH
13.9 MI EAST OF MAYBELL, Moffat, CO
Built 1958 Load: 21.8 t ADT: 940
US 40 ML
GoodOver: RED WASH
12 MI. E. OF DINOSAUR, Moffat, CO
Built 1971 Load: 25.9 t ADT: 630
County Road 1
GoodOver: Little Snake River
0.4 Mi So of Wym SH 70, Moffat, CO
Built 1988 Load: 28.0 t ADT: 176
County Road 10
GoodOver: Little Snake River
12.4 Mi So of St Hwy 318, Moffat, CO
Built 1989 Load: 28.4 t ADT: 4
US 40 ML
GoodOver: DRAW
W. SIDE OF DINOSAUR, Moffat, CO
Built 1936 Load: 28.7 t ADT: 1,900
US 40 ML
GoodOver: YAMPA RIVER
3 MI EAST OF MAYBELL, Moffat, CO
Built 1998 Load: 29.2 t ADT: 760
County Road 129
GoodOver: Little Snake River
0.13 Mi So of Wym. SH 70, Moffat, CO
Built 1989 Load: 29.6 t ADT: 153
SH 318 ML
GoodOver: VERMILLION CREEK
29 MI NW OF SUNBEAM, Moffat, CO
Built 1976 Load: 29.7 t ADT: 100
SH 13 ML
GoodOver: MUD SPRING DRAW
30 MILES NORTH OF CRAIG, Moffat, CO
Built 1998 Load: 31.2 t ADT: 860
SH 318 ML
GoodOver: LITTLE SNAKE RIVER
14.8 MI NW OF JCT US 40, Moffat, CO
Built 1984 Load: 31.3 t ADT: 180
US 40 ML
GoodOver: MILLER CREEK
16 MI. E. OF DINOSAUR, Moffat, CO
Built 1971 Load: 31.3 t ADT: 630
Hospital Loop Road
GoodOver: Cedar Mountain Gulch
.10 Mi West of CR7, Moffat, CO
Built 2008 Load: 31.3 t ADT: 939
US 40 ML EBND
GoodOver: FORTIFICATION CREEK
IN CRAIG, Moffat, CO
Built 1977 Load: 31.8 t ADT: 2,500
County Road 4N
GoodOver: Little Snake River
0.84 Mi North of Co Rd 4, Moffat, CO
Built 1989 Load: 35.7 t ADT: 26
SH 318 ML
GoodOver: SANDWASH CREEK
11.4 MI W OF SUNBEAM, Moffat, CO
Built 1978 Load: 39.5 t ADT: 180
SH 394 ML
GoodOver: YAMPA RIVER
1 M SO OF CRAIG, Moffat, CO
Built 1985 Load: 47.4 t ADT: 3,100
SH 13 ML
GoodOver: WILDLIFE CROSSING
16.3 MI S OF WYO/CO LINE, Moffat, CO
Built 2022 Load: 55.1 t ADT: 930
College Avenue
GoodOver: Pine Ridge Gulch
50 Ft. S of First Street, Moffat, CO
Built 1995 Load: 57.2 t ADT: 148
CNTY RD 17 AND 51
GoodOver: COLOWYO COAL RAILROAD
1 MI NW of St Hwy13 MP 64, Moffat, CO
Built 1975 Load: 61.9 t ADT: 110
US 40 ML
GoodOver: ELKHEAD RIVER
6.4 MI EAST OF JCT SH13, Moffat, CO
Built 1992 Load: 70.9 t ADT: 4,200
SH 13 ML
GoodOver: MILK CREEK
20 Mi S OF CRAIG, Moffat, CO
Built 1977 Load: 96.0 t ADT: 1,500
SH 13 ML
GoodOver: DRAW
3.2 MI NORTH OF CRAIG, Moffat, CO
Built 2006 Load: 99.9 t ADT: 2,000
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.