US Bridges

US-285 over Unnamed Waterway

Good

Santa Fe County, New Mexico · 9.70 MI N of JCT I-40 · Structure no. 000000000003849

Built
1940
85 years old, rebuilt 1994
Condition
Good
inspected January 2023
Type
Culvert
Concrete
Length
33 ft
5 main spans
Daily traffic
1,587
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 1940 and reconstructed in 1994, so it is 85 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 1,587 vehicles a day, roughly 17% of them trucks, projected to reach 2,158 by 2043. The structure is 33 ft (10.1 m) long. If it were closed, the detour would be 60.3 mi (97 km).

CarriesUS-285
CrossesUnnamed Waterway
Location9.70 MI N of JCT I-40
RouteU.S. Route 285
Coordinates35.13401, -105.73796
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 2023
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 rating26.8 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckNot applicable
Main spans5
Design loadH 15
Structure length33 ft (10.1 m)
Longest span6 ft (1.8 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,587 (2023)
Projected traffic2,158 by 2043
Trucks17%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed60.3 mi (97 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$150,000 (2030 estimate)
NavigationNot applicable (no waterway)

Frequently asked questions

When was US-285 over Unnamed Waterway built?

It was built in 1940, making it 85 years old in 2025. It was reconstructed in 1994.

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 2023.

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

About 1,587 vehicles per day (2023 count), of which roughly 17% are trucks.

How long is US-285 over Unnamed Waterway?

The structure is 33 ft (10.1 m) long with a longest span of 6 ft (1.8 m).

Who owns US-285 over Unnamed Waterway?

It is owned by the State Highway Agency.