Total bridges
58
Public highway bridges in Hidalgo County
County profile · official public datasets
Hidalgo County, NM
58 public highway bridges tracked in the FHWA National Bridge Inventory: 17.2% rated Good, 79.3% Fair, 3.4% Poor.
- 58
- Public bridges
- 17.2%
- Good condition
- 3.4%
- Poor condition
The verdict
According to the Federal Highway Administration's 2024 National Bridge Inventory.
Hidalgo County pairs a better-than-median Poor-condition share among rated counties in the state with an older average build year than the state inventory.
- Top 50%
- lowest Poor share in state
- 3.4%
- Poor-condition share
- 58
- public highway bridges
- 1966
- 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.
Hidalgo County Bridge Snapshot
According to the Federal Highway Administration's 2024 National Bridge Inventory, Hidalgo County ranks #16 of 32 New Mexico counties with at least 5 public highway bridges on Poor-condition share (lower share ranks better; currently 3.4%). Hidalgo County, New Mexico contains 58 public highway bridges. Roughly 17.2% are rated “Good,” 79.3% “Fair,” and 3.4% “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
17.2%
10 of 58 rated 7-9
Fair condition
79.3%
46 of 58 rated 5-6
Poor condition
3.4%
2 of 58 rated 4 or below
In-state Poor-share rank
#16 of 32
Among New Mexico counties with 5+ bridges, lower share ranks better
Condition distribution
Share of 58 NBI-tracked bridges by lowest applicable component rating.
Good 17.2% (10)
Fair 79.3% (46)
Poor 3.4% (2)
Hidalgo County's Poor-condition bridges carry 2,678 vehicle crossings a day
That is 0.8% of the county's reported daily bridge traffic on 3.4% of its bridges: Poor-condition structures carry less traffic than their share of the inventory. Each Poor bridge averages 1,339 crossings a day against 5,548 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 58 of 58 bridges in this county that report an average daily traffic count. Source: FHWA National Bridge Inventory, 2024 release.
82.8% of Hidalgo County's bridges have passed the 50-year mark
48 of the 58 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 17.2% 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 94.1% of the county's Poor-condition bridge traffic
L-00021 over I-10 EBL and WBL, built 1972, carries 2,521 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 2-bridge count understates how much of the daily burden sits on a single crossing.
Share is of the 2,678 daily crossings on Poor-rated bridges that report a traffic count. Source: FHWA National Bridge Inventory, 2024 release.
When Hidalgo County's bridges were built
58 bridges with a recorded construction year, grouped by decade
- 1930s 5
1930–1939
5 bridges
- 1940s 4
1940–1949
4 bridges
- 1950s
1950–1959
13 bridges
- 1960s
1960–1969
11 bridges
- 1970s
1970–1979
20 bridges
- 1990s 1
1990–1999
1 bridges
- 2000s 2
2000–2009
2 bridges
- 2020s 2
2020–2029
2 bridges
What this shows Construction peaked in the 1970s, when 20 of the county's bridges still in the inventory were built, which is 34.5% of those with a recorded year. That cohort is now 45 to 54 years old in the 2024 inventory. Its average build year is 1966, 7 years older than the New Mexico average of 1973.
How Hidalgo County compares with New Mexico's closest counties by inventory size
The 5 New Mexico counties nearest Hidalgo County in number of bridges, with their condition splits. Its 3.4% Poor share is the 2nd-lowest of these 6. Its average build year of 1966 against a peer-group mean of 1970 is in line with the group.
Showing the 5 closest of 31 New Mexico counties eligible for comparison.
| County | Bridges | Good | Fair | Poor | Avg. built |
|---|---|---|---|---|---|
| Guadalupe County | 82 | 23.2% | 67.1% | 9.8% | 1966 |
| Mora County | 79 | 32.9% | 59.5% | 7.6% | 1971 |
| Torrance County | 70 | 44.3% | 50% | 5.7% | 1963 |
| Union County | 68 | 55.9% | 41.2% | 2.9% | 1972 |
| Hidalgo County (this page) | 58 | 17.2% | 79.3% | 3.4% | 1966 |
| Valencia County | 48 | 27.1% | 68.8% | 4.2% | 1977 |
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 Hidalgo 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 Hidalgo County, both outside New Mexico so the neighborhoods are not the same-state size table above.
Similar inventory size
Nearest county inventories outside NM (58 bridges here).
- Wrangell City and County, AK · 58 bridges
- Jeff Davis County, GA · 58 bridges
- Putnam County, GA · 58 bridges
- Union County, IN · 58 bridges
Similar average build year
Nearest mean year-built outside NM (1966 here).
- Butler County, KS · avg 1966 · 591 bridges
- Grafton County, NH · avg 1966 · 544 bridges
- Queens County, NY · avg 1966 · 514 bridges
- Lehigh County, PA · avg 1966 · 381 bridges
Source: FHWA National Bridge Inventory, 2024 release. Peers floor at 10 bridges so stub inventories cannot own the match.
All bridges (58)
NM-80
FairOver: UNNAMED WATERWAY
3.88 M NE OF ARIZ LINE, Hidalgo, NM
Built 1936 Load: 24.5 t ADT: 494
NM-80
FairOver: UNNAMED WATERWAY
11.69 M NE OF ARIZ LINE, Hidalgo, NM
Built 1934 Load: 24.5 t ADT: 330
I-10 WBL
FairOver: ANIMAS STREET
23.0 M E Ariz state line, Hidalgo, NM
Built 1974 Load: 26.1 t ADT: 14,069
I-10 EBL
FairOver: ANIMAS STREET
23.0 M E Arizona St line, Hidalgo, NM
Built 1974 Load: 29.1 t ADT: 14,069
NM-80
FairOver: I-10 EBL/WBL
Junction of I-10/NM-80, Hidalgo, NM
Built 1957 Load: 32.4 t ADT: 319
L-00021
FairOver: SHAKESPEAR ARROYO
0.9 MI W US-70/LORDSBURG, Hidalgo, NM
Built 1933 Load: 32.7 t ADT: 1,584
NM-92
FairOver: Gila River
7.0 Mi E of Ariz Line, Hidalgo, NM
Built 1950 Load: 32.7 t ADT: 157
I-10 EBL/WBL
FairOver: UNNAMED WATERWAY
8.1 MI W JCT-70/LORDSBURG, Hidalgo, NM
Built 1948 Load: 32.7 t ADT: 14,685
NM-92
FairOver: CARLISLE CANYON
0.1 MI E OF ARIZONA LINE, Hidalgo, NM
Built 1949 Load: 32.7 t ADT: 157
L-00021
FairOver: US-70 IN LORDSBURG
JCT US70/LP21 IN LRDSBRG, Hidalgo, NM
Built 1958 Load: 32.7 t ADT: 2,281
I-10 WBL/EBL
FairOver: LOCAL ROAD
3.6 M-E OF ARIZ ST LINE, Hidalgo, NM
Built 1957 Load: 32.7 t ADT: 17,349
I-10 EBL/WBL
FairOver: UNNAMED WATERWAY
4.8 M-E OF ARIZ ST LINE, Hidalgo, NM
Built 1957 Load: 32.7 t ADT: 17,349
L-00021
FairOver: UNNAMED WATERWAY
0.3 MI W US-70/LORDSBURG, Hidalgo, NM
Built 1958 Load: 32.7 t ADT: 1,584
L-00021
FairOver: UNNAMED WATERWAY
0.7 MI E US-70/LORDSBURG, Hidalgo, NM
Built 1958 Load: 32.7 t ADT: 2,281
FR-1009
FairOver: WWAY @ I10 MP 24.6
2 MI E OF US70 I10 MP24.6, Hidalgo, NM
Built 1958 Load: 32.7 t ADT: 235
NM-338
FairOver: I-10 EB and WB
Junction of I-10/NM-338, Hidalgo, NM
Built 1959 Load: 32.7 t ADT: 324
FR-1004
FairOver: I-10 EB and WB @ MP15.69
4.6 M E Jct NM-338/I-10, Hidalgo, NM
Built 1959 Load: 32.7 t ADT: 26
I-10 EBL
FairOver: UNNAMED WATERWAY
11.8 M-E OF ARIZ ST LINE, Hidalgo, NM
Built 1959 Load: 32.7 t ADT: 14,685
US-70
FairOver: UNNAMED WATERWAY
25.8 MI SE OF ARIZ LINE, Hidalgo, NM
Built 1961 Load: 32.7 t ADT: 1,401
US-70
FairOver: UNNAMED WATERWAY
27.0 MI SE OF ARIZ LINE, Hidalgo, NM
Built 1961 Load: 32.7 t ADT: 1,302
US-70
FairOver: LORDSBURG DRAW
28.5 MI SE OF ARIZ LINE, Hidalgo, NM
Built 1961 Load: 32.7 t ADT: 2,632
I-10 WBL/EBL
FairOver: UNNAMED WATERWAY
8.85 MI E OF JCT NM-494, Hidalgo, NM
Built 1962 Load: 32.7 t ADT: 20,736
I-10 WBL/EBL
FairOver: UNNAMED WATERWAY
9.25 MI E OF JCT NM-494, Hidalgo, NM
Built 1962 Load: 32.7 t ADT: 20,736
I-10 EBL/WBL
FairOver: UNNAMED WATERWAY
9.6 MI E OF JCT NM-494, Hidalgo, NM
Built 1962 Load: 32.7 t ADT: 20,736
NM-530
FairOver: UNNAMED WATERWAY
3.5 MI E OF ARIZ ST LINE, Hidalgo, NM
Built 1962 Load: 32.7 t ADT: 41
US-70
FairOver: UNNAMED WATERWAY
18.8 MI SE OF ARIZ LINE, Hidalgo, NM
Built 1963 Load: 32.7 t ADT: 1,234
US-70
FairOver: UNNAMED WATERWAY
19.2 MI SE OF ARIZ LINE, Hidalgo, NM
Built 1963 Load: 32.7 t ADT: 1,234
US-70
FairOver: UNNAMED WATERWAY
23.3 MI SE OF ARIZ LINE, Hidalgo, NM
Built 1963 Load: 32.7 t ADT: 1,234
I-10 WBL
FairOver: UNNAMED WATERWAY
11.8 M-E OF ARIZ ST LINE, Hidalgo, NM
Built 1959 Load: 32.7 t ADT: 14,685
L-00021
FairOver: I-10 EB/WB @ MP 20.8
20.8 Mi E of Ariz St Line, Hidalgo, NM
Built 1974 Load: 32.7 t ADT: 1,584
FR-1008
FairOver: DRAINAGE DITCH
0.2 MI E OF LRDSBG E INTC, Hidalgo, NM
Built 1972 Load: 32.7 t ADT: 2,521
I-10 EBL/WBL
FairOver: UNNAMED WATERWAY
28.0 MI E OF ARIZ ST LINE, Hidalgo, NM
Built 1972 Load: 32.7 t ADT: 7,326
I-10 EBL/WBL
FairOver: UNNAMED WATERWAY
28.6 MI E OF ARIZ ST LINE, Hidalgo, NM
Built 1972 Load: 32.7 t ADT: 7,326
I-10 EBL/WBL
FairOver: UNNAMED WATERWAY
I-10 MP 29.05, Hidalgo, NM
Built 1972 Load: 32.7 t ADT: 7,326
I-10 EBL/WBL
FairOver: UNNAMED WATERWAY
29.1 M E OF ARIZ ST LINE, Hidalgo, NM
Built 1972 Load: 32.7 t ADT: 18,060
FR-1008
FairOver: WWAY @ I10 MP 29.1
29.1 M E OF ARIZ ST LINE, Hidalgo, NM
Built 1972 Load: 32.7 t ADT: 14
I-10 EBL/WBL
FairOver: UNNAMED WATERWAY
21.3 MI E OF ARIZ LINE, Hidalgo, NM
Built 1974 Load: 32.7 t ADT: 14,922
L-00021
FairOver: UNNMD WWAY IN LORDSBURG
1.3 MI W US-70/LORDSBURG, Hidalgo, NM
Built 1958 Load: 32.7 t ADT: 1,584
NM-90
FairOver: UNNAMED WATERWAY
1.99 MI N OF JCT US-70 AT, Hidalgo, NM
Built 1974 Load: 32.7 t ADT: 1,484
NM-80
FairOver: SAN SIMON RIVER
16.1 MI NE OF ARIZ LINE, Hidalgo, NM
Built 1976 Load: 32.7 t ADT: 330
NM-80
FairOver: UNNAMED WATERWAY
16.8 MI NE OF ARIZ LINE, Hidalgo, NM
Built 1976 Load: 32.7 t ADT: 330
NM-80
FairOver: UNNAMED WATERWAY
16.7 MI NE OF ARIZ LINE, Hidalgo, NM
Built 1976 Load: 32.7 t ADT: 330
NM-80
FairOver: UNNAMED WATERWAY
1.12 MI NE OF ARIZ LINE, Hidalgo, NM
Built 1990 Load: 32.7 t ADT: 494
NM-80
FairOver: SAN SIMON RIVER
15.9 MI NE OF ARIZ LINE, Hidalgo, NM
Built 1976 Load: 34.5 t ADT: 330
I-10 EBL
FairOver: Unnamed Waterway
4.0 Mi E of US-70/Lordsbg, Hidalgo, NM
Built 2007 Load: 39.8 t ADT: 7,326
I-10 WB
FairOver: Unnamed Waterway
4.0 Mi E of US-70/Lordsbg, Hidalgo, NM
Built 2006 Load: 47.7 t ADT: 7,326
NM-80
GoodOver: UNNAMED WATERWAY
27.8 M NE OF ARIZ LINE, Hidalgo, NM
Built 1934 Load: 24.5 t ADT: 319
NM-80
GoodOver: UNNAMED WATERWAY
11.51 M NE OF ARIZ LINE, Hidalgo, NM
Built 1934 Load: 24.5 t ADT: 330
I-10 EBL
GoodOver: TURBINE STATION ROAD
5.0 MI W GRANT/HIDALGO CL, Hidalgo, NM
Built 1972 Load: 27.6 t ADT: 18,060
I-10 WBL
GoodOver: TURBINE STATION ROAD
5.0 MI W GRANT/HIDALGO CL, Hidalgo, NM
Built 1972 Load: 27.6 t ADT: 15,351
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.