US Bridges

US-491 NB over Tocito Wash

Good

San Juan County, New Mexico · 5.9 MI N of RD to Toadlna · Structure no. 000000000009337

Built
2005
20 years old
Condition
Good
inspected August 2023
Type
Slab
Concrete Continuous
Length
220 ft
7 main spans
Daily traffic
6,055
2023 count
Owner
State
State Highway Agency

About this bridge

US-491 NB over Tocito Wash is a concrete continuous slab carrying US-491 NB over Tocito Wash in San Juan County, New Mexico. It was built in 2005, so it is 20 years old, younger 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 6,055 vehicles a day, roughly 17% of them trucks, projected to reach 8,234 by 2043. The structure is 220 ft (67.1 m) long and 39 ft wide.

CarriesUS-491 NB
CrossesTocito Wash
Location5.9 MI N of RD to Toadlna
RouteU.S. Route 491
Coordinates36.41807, -108.72111
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
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionAugust 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy5: Somewhat better than minimum adequacy to tolerate being left in place as is
Approach roadway alignment8: Equal to present desirable criteria
Operating rating110.1 US tons
Inventory rating70 US tons

Structure

Structure typeSlab
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans7
Design loadHS 20
Structure length220 ft (67.1 m)
Longest span32 ft (9.8 m)
Deck width39 ft (11.9 m)
Roadway width36 ft (11 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic6,055 (2023)
Projected traffic8,234 by 2043
Trucks17%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed—
TollOn a free road
National Highway SystemYes
Strategic Highway NetworkNon-Interstate STRAHNET route

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—
NavigationNot applicable (no waterway)

Frequently asked questions

When was US-491 NB over Tocito Wash built?

It was built in 2005, making it 20 years old in 2025.

What condition is US-491 NB over Tocito Wash 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 August 2023.

How much traffic does US-491 NB over Tocito Wash carry?

About 6,055 vehicles per day (2023 count), of which roughly 17% are trucks.

How long is US-491 NB over Tocito Wash?

The structure is 220 ft (67.1 m) long with a longest span of 32 ft (9.8 m) and a deck 39 ft wide.

Who owns US-491 NB over Tocito Wash?

It is owned by the State Highway Agency.