US Bridges

US-285 over Unnamed Waterway

Good

Santa Fe County, New Mexico · 3.6 MI S of JCT I-25 · Structure no. 000000000003862

Built
1939
86 years old, rebuilt 1981
Condition
Good
inspected January 2022
Type
Culvert
Concrete
Length
26 ft
4 main spans
Daily traffic
3,340
2023 count
Owner
State
State Highway Agency

About this bridge

US-285 over Unnamed Waterway is a concrete culvert carrying US-285 over Unnamed Waterway in Santa Fe County, New Mexico. It was built in 1939 and reconstructed in 1981, so it is 86 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 3,340 vehicles a day, roughly 17% of them trucks, projected to reach 4,542 by 2043. The structure is 26 ft (8 m) long. If it were closed, the detour would be 98.8 mi (159 km).

CarriesUS-285
CrossesUnnamed Waterway
Location3.6 MI S of JCT I-25
RouteU.S. Route 285
Coordinates35.50305, -105.89956
Functional classRural Principal Arterial - Other

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 protection8 Very GoodNo problems noted.
Culvert7 GoodSome minor problems.
Last inspectionJanuary 2022
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating41.1 US tons
Inventory rating25 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckNot applicable
Main spans4
Design loadH 15
Structure length26 ft (8 m)
Longest span7 ft (2 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic3,340 (2023)
Projected traffic4,542 by 2043
Trucks17%
Lanes on structure4
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed98.8 mi (159 km)
TollOn a free road
National Highway SystemYes

Ownership and planned work

OwnerState Highway Agency
Maintained byState Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedRehabilitation because of general structure deterioration or inadequate strength
Estimated improvement cost$91,000 (2030 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was US-285 over Unnamed Waterway built?

It was built in 1939, making it 86 years old in 2025. It was reconstructed in 1981.

What condition is US-285 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 January 2022.

How much traffic does US-285 over Unnamed Waterway carry?

About 3,340 vehicles per day (2023 count), of which roughly 17% are trucks.

How long is US-285 over Unnamed Waterway?

The structure is 26 ft (8 m) long with a longest span of 7 ft (2 m).

Who owns US-285 over Unnamed Waterway?

It is owned by the State Highway Agency.