US Bridges

NM-30 over Unnamed Waterway

Good

Santa Fe County, New Mexico · Nm 30 Mm 1.55 · Structure no. 000000000006987

Built
1968
57 years old
Condition
Good
inspected February 2023
Type
Culvert
Concrete
Length
74 ft
7 main spans
Daily traffic
8,929
2023 count
Owner
State
State Highway Agency

About this bridge

NM-30 over Unnamed Waterway is a concrete culvert carrying NM-30 over Unnamed Waterway in Santa Fe County, New Mexico. It was built in 1968, so it is 57 years old, older than the New Mexico average of 51.5 years.

The most recent inspection reported to the Federal Highway Administration rates it in good condition with a lowest component rating of 7 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 8,929 vehicles a day, roughly 11% of them trucks, projected to reach 12,143 by 2043. The structure is 74 ft (22.7 m) long. If it were closed, the detour would be 29.8 mi (48 km).

CarriesNM-30
CrossesUnnamed Waterway
LocationNm 30 Mm 1.55
RouteState Highway 30
Coordinates35.89943, -106.13684
Functional classRural Minor Arterial

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Culvert7 GoodSome minor problems.
Last inspectionFebruary 2023
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating71.4 US tons
Inventory rating35.7 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckNot applicable
Main spans7
Design loadHS 20
Structure length74 ft (22.7 m)
Longest span10 ft (3 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic8,929 (2023)
Projected traffic12,143 by 2043
Trucks11%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed29.8 mi (48 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerState Highway Agency
Maintained byState Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was NM-30 over Unnamed Waterway built?

It was built in 1968, making it 57 years old in 2025.

What condition is NM-30 over Unnamed Waterway in?

The National Bridge Inventory rates it in good condition. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted. The last reported inspection was in February 2023.

How much traffic does NM-30 over Unnamed Waterway carry?

About 8,929 vehicles per day (2023 count), of which roughly 11% are trucks.

How long is NM-30 over Unnamed Waterway?

The structure is 74 ft (22.7 m) long with a longest span of 10 ft (3 m).

Who owns NM-30 over Unnamed Waterway?

It is owned by the State Highway Agency.