Total bridges
182
Public highway bridges in Sandoval County
County profile · official public datasets
Sandoval County, NM
182 public highway bridges tracked in the FHWA National Bridge Inventory: 40.7% rated Good, 54.4% Fair, 4.9% Poor.
- 182
- Public bridges
- 40.7%
- Good condition
- 4.9%
- Poor condition
The verdict
According to the Federal Highway Administration's 2024 National Bridge Inventory.
Sandoval County pairs a higher-than-median Poor-condition share among rated counties in the state with a newer average build year than the state inventory.
- 20th
- of 32 on Poor share
- 4.9%
- Poor-condition share
- 182
- public highway bridges
- 1979
- 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.
Sandoval County Bridge Snapshot
According to the Federal Highway Administration's 2024 National Bridge Inventory, Sandoval County ranks #20 of 32 New Mexico counties with at least 5 public highway bridges on Poor-condition share (lower share ranks better; currently 4.9%). Sandoval County, New Mexico contains 182 public highway bridges. Roughly 40.7% are rated “Good,” 54.4% “Fair,” and 4.9% “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
40.7%
74 of 182 rated 7-9
Fair condition
54.4%
99 of 182 rated 5-6
Poor condition
4.9%
9 of 182 rated 4 or below
In-state Poor-share rank
#20 of 32
Among New Mexico counties with 5+ bridges, lower share ranks better
Condition distribution
Share of 182 NBI-tracked bridges by lowest applicable component rating.
Good 40.7% (74)
Fair 54.4% (99)
Poor 4.9% (9)
Sandoval County's Poor-condition bridges carry 14,923 vehicle crossings a day
That is 0.9% of the county's reported daily bridge traffic on 4.9% of its bridges: Poor-condition structures carry less traffic than their share of the inventory. Each Poor bridge averages 1,658 crossings a day against 5,718 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 182 of 182 bridges in this county that report an average daily traffic count. Source: FHWA National Bridge Inventory, 2024 release.
39.6% of Sandoval County's bridges have passed the 50-year mark
72 of the 182 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 40.7% 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 48.3% of the county's Poor-condition bridge traffic
NM-313 over Las Huertas Creek, built 1975, carries 7,203 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 9-bridge count understates how much of the daily burden sits on a single crossing.
Share is of the 14,923 daily crossings on Poor-rated bridges that report a traffic count. Source: FHWA National Bridge Inventory, 2024 release.
When Sandoval County's bridges were built
182 bridges with a recorded construction year, grouped by decade
- 1930s
1930–1939
17 bridges
- 1940s 4
1940–1949
4 bridges
- 1950s 13
1950–1959
13 bridges
- 1960s
1960–1969
19 bridges
- 1970s
1970–1979
33 bridges
- 1980s
1980–1989
40 bridges
- 1990s
1990–1999
16 bridges
- 2000s
2000–2009
22 bridges
- 2010s 15
2010–2019
15 bridges
- 2020s 3
2020–2029
3 bridges
What this shows Construction peaked in the 1980s, when 40 of the county's bridges still in the inventory were built, which is 22% of those with a recorded year. That cohort is now 35 to 44 years old in the 2024 inventory. Its average build year is 1979, 6 years newer than the New Mexico average of 1973.
How Sandoval County compares with New Mexico's closest counties by inventory size
The 5 New Mexico counties nearest Sandoval County in number of bridges, with their condition splits. Its 4.9% Poor share is the 1st-lowest of these 6. Its average build year of 1979 against a peer-group mean of 1970 is 9 years newer.
Showing the 5 closest of 31 New Mexico counties eligible for comparison.
| County | Bridges | Good | Fair | Poor | Avg. built |
|---|---|---|---|---|---|
| Socorro County | 188 | 16.5% | 76.1% | 7.4% | 1961 |
| Sandoval County (this page) | 182 | 40.7% | 54.4% | 4.9% | 1979 |
| San Miguel County | 175 | 41.1% | 50.9% | 8% | 1972 |
| San Juan County | 174 | 36.8% | 56.9% | 6.3% | 1977 |
| Rio Arriba County | 160 | 47.5% | 46.3% | 6.3% | 1973 |
| Colfax County | 140 | 37.9% | 57.1% | 5% | 1969 |
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 Sandoval 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 Sandoval County, both outside New Mexico so the neighborhoods are not the same-state size table above.
Similar inventory size
Nearest county inventories outside NM (182 bridges here).
- Logan County, CO · 182 bridges
- Ida County, IA · 182 bridges
- Wright County, IA · 182 bridges
- Pulaski County, KY · 182 bridges
Similar average build year
Nearest mean year-built outside NM (1979 here).
- Pima County, AZ · avg 1979 · 1,150 bridges
- Jefferson County, KY · avg 1979 · 662 bridges
- Spartanburg County, SC · avg 1979 · 638 bridges
- McPherson County, KS · avg 1979 · 586 bridges
Source: FHWA National Bridge Inventory, 2024 release. Peers floor at 10 bridges so stub inventories cannot own the match.
Good-condition bridges (74)
IRR/US-550
GoodOver: CANYON LARGO
26.5 MI NW OF JCT NM-126, Sandoval, NM
Built 1981 Load: 20.6 t ADT: 4,975
FDR 376
GoodOver: TIMBER CRIB RETAIN. WAL
5.3 MI NW/O NM 485/4 JCT, Sandoval, NM
Built 1973 Load: 21.4 t ADT: 250
NM-197
GoodOver: TORREON WASH
25.3 MI W OF US 550, Sandoval, NM
Built 1971 Load: 22.4 t ADT: 1,092
IRR/NM-4
GoodOver: UNNAMED WATERWAY
3.9 M N OF JCT NM-4/US550, Sandoval, NM
Built 1941 Load: 24.3 t ADT: 4,050
NM-126
GoodOver: RIO DE LAS VACAS
12.2 Mi. E. Jct. US 550, Sandoval, NM
Built 2004 Load: 26.0 t ADT: 50
IRR/US-550
GoodOver: CANYON LARGO
21.1 MI NW OF JCT NM-126, Sandoval, NM
Built 1978 Load: 26.3 t ADT: 4,839
IRR BIA RTE 78
GoodOver: CHAMISA WASH
EAST EDGE OF ZIA PUEBLO, Sandoval, NM
Built 1997 Load: 26.8 t ADT: 150
IRR BIA ROUTE 81
GoodOver: POISON OAK WASH
2.4 KM SE JEMEZ PUEBLO, Sandoval, NM
Built 1996 Load: 28.4 t ADT: 10
FDR 376
GoodOver: RIO GUADALUPE
0.5 MI S/O FSR 604, Sandoval, NM
Built 1982 Load: 28.8 t ADT: 250
I. S. Rte. 74
GoodOver: JEMEZ RIVER
7.7 MI. WEST NM550/NM528, Sandoval, NM
Built 2000 Load: 29.5 t ADT: 30
US-550
GoodOver: UNNAMED WATERWAY
24.4 MI NW OF JCT I-25, Sandoval, NM
Built 1979 Load: 29.6 t ADT: 5,243
US-550
GoodOver: ARROYO PIEDRA PARADA
20.8 MI NW OF JCT I-25, Sandoval, NM
Built 1979 Load: 30.0 t ADT: 9,054
I-25 SBL
GoodOver: NM-473
Junction I-25 and Nm-473, Sandoval, NM
Built 2003 Load: 30.5 t ADT: 31,761
US-550
GoodOver: RITO LECHE
0.3 MI S OF JCT NM-126, Sandoval, NM
Built 1970 Load: 32.0 t ADT: 7,577
NM-528
GoodOver: ARROYO DELOS MONTOYAS
6.4 MI S OF JCT US-550, Sandoval, NM
Built 1977 Load: 32.0 t ADT: 36,514
US-550
GoodOver: IRRIGATION DITCH
1.26 MI NW OF JCT I-25, Sandoval, NM
Built 1938 Load: 32.4 t ADT: 38,912
US-550
GoodOver: UNNAMED WATERWAY
39.6 MI NW OF JCT I-25, Sandoval, NM
Built 1938 Load: 32.4 t ADT: 5,243
US-550
GoodOver: NACIMIENTO CREEK
0.12 M S OF JCT NM197, Sandoval, NM
Built 1965 Load: 32.4 t ADT: 4,964
US-550
GoodOver: ARROYO CHIUILLA
3.6 MI N OF JCT NM-96, Sandoval, NM
Built 1969 Load: 32.4 t ADT: 4,839
US-550
GoodOver: UNNAMED WATERWAY
8.3 MI NW OF JCT I-25, Sandoval, NM
Built 1970 Load: 32.4 t ADT: 11,237
US-550
GoodOver: UNNAMED WATERWAY
13.9 MI NW OF JCT I-25, Sandoval, NM
Built 1970 Load: 32.4 t ADT: 11,237
US-550
GoodOver: UNNAMED WATERWAY
14.6 MI NW OF JCT I-25, Sandoval, NM
Built 1970 Load: 32.4 t ADT: 11,237
US-550
GoodOver: UNNAMED WATERWAY
16.0 MI NW OF JCT I-25, Sandoval, NM
Built 1970 Load: 32.4 t ADT: 11,237
US-550
GoodOver: UNNAMED WATERWAY
25.0 MI NW OF JCT I-25, Sandoval, NM
Built 1977 Load: 32.4 t ADT: 5,243
FR-2083
GoodOver: UNNAMED WATERWAY
1.2 MI N JCT I-25/US-550, Sandoval, NM
Built 1981 Load: 32.4 t ADT: 1,706
IA-2248
GoodOver: UNNAMED WATERWAY
5.6 MI N JCT US-550, Sandoval, NM
Built 1981 Load: 32.4 t ADT: 893
43-0279
GoodOver: ARROYO BALCON
9.1 MI S OF JCT US 550, Sandoval, NM
Built 1980 Load: 32.4 t ADT: 483
IRR/NM-4
GoodOver: UNNAMED WATERWAY
8.2 MI N OF NM-550, Sandoval, NM
Built 1986 Load: 32.4 t ADT: 1,992
43-Z001
GoodOver: RIO PUERCO
13.2 M SW US-550/NM-279, Sandoval, NM
Built 1987 Load: 32.4 t ADT: 96
43-Z001
GoodOver: CANADA SANTIAGO
14.2 MI SW OF JCT US-550, Sandoval, NM
Built 1980 Load: 32.4 t ADT: 96
NM-96
GoodOver: UNNAMED WATERWAY
7.2 MI N JCT NM96 & US550, Sandoval, NM
Built 1994 Load: 32.4 t ADT: 665
NM-96
GoodOver: ARROYO SAN JOSE
0.4 MI N OF US 550, Sandoval, NM
Built 1996 Load: 32.4 t ADT: 1,162
NM-22
GoodOver: Unnamed Waterway
1.5 M N Jct NM-16/NM-22, Sandoval, NM
Built 1999 Load: 32.4 t ADT: 1,511
NM-126
GoodOver: RIO CEBOLLA
28.9 MI E OF US-550, Sandoval, NM
Built 2007 Load: 32.4 t ADT: 132
43-279
GoodOver: RIO PUERCO
4.5 Mi S of US-550, Sandoval, NM
Built 2008 Load: 32.4 t ADT: 483
NM-528
GoodOver: ARROYO DE LA BARRANCA
1.0 MI N OF NM-448, Sandoval, NM
Built 1993 Load: 32.4 t ADT: 22,888
US-550 EB and WB
GoodOver: I-25 SBL and NBL
16.3 M N Jct I-25/I-40, Sandoval, NM
Built 1987 Load: 32.5 t ADT: 20,167
I-25 NBL
GoodOver: NM-473
Junction I-25/NM-473, Sandoval, NM
Built 2003 Load: 32.5 t ADT: 31,761
IRR BIA RTE 88
GoodOver: RIO GRANDE RIVER
SANDOVAL COUNTY, Sandoval, NM
Built 2018 Load: 32.6 t ADT: 500
US-550
GoodOver: UNNAMED WATERWAY
25.4 miles north of NM 4_, Sandoval, NM
Built 2002 Load: 32.7 t ADT: 5,243
US-550
GoodOver: ARROYO DE LOS PINOS
11.3 miles SE of NM 197, Sandoval, NM
Built 1966 Load: 32.7 t ADT: 4,964
43-OS13
GoodOver: Rio Puerco
2.7 NE of NM 126, Sandoval, NM
Built 2011 Load: 32.7 t ADT: 96
43-634
GoodOver: RIO SAN ANTONIO
0.01 Mi W NM-126 @ MP37.8, Sandoval, NM
Built 2011 Load: 32.7 t ADT: 96
43-4301
GoodOver: Unnamed Waterway
.10 M S Jct West Phalia, Sandoval, NM
Built 2006 Load: 32.7 t ADT: 91
43-4301
GoodOver: Arroyo De Los Montoyas
King Blvd Serene mdws dr, Sandoval, NM
Built 2006 Load: 32.7 t ADT: 91
43-4301
GoodOver: Arroyos De Los Montoyas
.6 mile West Wilpett dr, Sandoval, NM
Built 2006 Load: 32.7 t ADT: 808
43-4301
GoodOver: Arroyo De Los Montoyas
0.3 M W Jct Meadows Blvd, Sandoval, NM
Built 2006 Load: 32.7 t ADT: 4,283
43-4301
GoodOver: Arroyo Hondo
3 M W Unser Blvd, Sandoval, NM
Built 2006 Load: 32.7 t ADT: 4,302
43-4301
GoodOver: Lisbon Channel
Jct of Lisbon Ave., Sandoval, NM
Built 2006 Load: 32.7 t ADT: 14,338
43-4301
GoodOver: Los Montoyas arroyo
Jct Loma Colorado Blvd., Sandoval, NM
Built 2008 Load: 32.7 t ADT: 4,978
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.