Grant County Bridge Report Card
Grant County scores 77 out of 100 on BridgeLookup's Bridge Condition Exposure Score, based on FHWA National Bridge Inventory records.
Grant County, New Mexico
Grant County has 99 bridges in the National Bridge Inventory, with 2 rated poor and 5 rated scour-critical. Its poor-condition share of 2.0% is at or below the 4.3% statewide average. Poor-condition bridges carry about 14,890 daily vehicle crossings.
Quote-Ready Local Facts
Copyable Facts for Reporters
BridgeLookup.com gives Grant County a Bridge Condition Exposure Score of 77/100 (C). The county has 99 bridges in the National Bridge Inventory, including 2 in poor condition and 5 rated scour-critical. Poor-condition bridges carry about 14,890 daily vehicle crossings. Poor condition does not mean unsafe; bridges judged unsafe are closed or restricted by transportation agencies.
How the Score Breaks Down
| Factor | Weight | County Value | Penalty |
|---|---|---|---|
| Poor-condition bridge share | 40 | 2.0% | 4.0 |
| Poor-condition traffic exposure | 25 | 4.4% of measured traffic | 3.3 |
| Scour-critical bridge share | 20 | 5.1% | 10.1 |
| Average age vs national baseline | 10 | 62 years vs 48 nationally | 5.8 |
| Traffic-data completeness | 5 | 340,503 measured daily crossings | 0.0 |
Score = 100 minus weighted penalties. The score is a comparative research signal, not an official safety rating. Read the full methodology.
County Comparisons
| County Poor-Condition Share | 2.0% |
| State Poor-Condition Share | 4.3% |
| National Poor-Condition Share | 6.7% |
| County Scour-Critical Share | 5.1% |
| Average Bridge Age | 62 years |
| Poor-Condition Traffic Exposure | 14,890 vehicles/day |
Bridges to Watch
Top Bridges to Watch in Grant County
| Bridge | Reason | Condition | Daily Traffic | Year Built |
|---|---|---|---|---|
| Nm-90 over Pinos Altos Creek | Poor condition + traffic exposure | Poor | 14,699 | 1961 |
| 17-3069 over Sapillo Creek | Poor condition + traffic exposure | Poor | 191 | 1986 |
| Nm-35 over Unnamed Waterway | Scour-critical foundation rating | Fair | 1,168 | 1924 |
| Fl-6400 over Cameron Creek | Scour-critical foundation rating | Good | 679 | 2022 |
| 17-b013 over Mimbres River | Scour-critical foundation rating | Fair | 191 | 1974 |
| Tyron Ridge Access over Unnamed Waterway | Scour-critical foundation rating | Good | 180 | 2021 |
| 17-z011 over Gila River | Scour-critical foundation rating | Fair | 30 | 1986 |
| Us-180 over Pinos Altos Creek | High traffic | Fair | 21,588 | 1948 |
| I-10 Ebl/wbl over Unnamed Waterway | High traffic | Fair | 15,578 | 1950 |
| I-10 Ebl/wbl over Unnamed Waterway | High traffic | Fair | 15,578 | 1957 |
Important safety note
Poor condition does not mean a bridge is unsafe. It means at least one major component has significant deterioration and the bridge is a priority for maintenance, repair, or replacement. Bridges judged unsafe are closed or restricted by transportation agencies.