US Bridges

NM-500 Wbl over Riverside Drain

Fair

Bernalillo County, New Mexico · 1.29 M W JCT NM-500/NM-47 · Structure no. 000000000008569

Built
1985
40 years old
Condition
Fair
inspected May 2024
Type
Slab
Concrete Continuous
Length
98 ft
3 main spans
Daily traffic
72,734
2023 count
Owner
State
State Highway Agency

About this bridge

NM-500 Wbl over Riverside Drain is a concrete continuous slab carrying NM-500 Wbl over Riverside Drain in Bernalillo County, New Mexico. It was built in 1985, so it is 40 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 fair condition with a lowest component rating of 5 out of 9. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

It carries about 72,734 vehicles a day, roughly 13% of them trucks, projected to reach 98,918 by 2043. The structure is 98 ft (29.9 m) long and 38 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

CarriesNM-500 Wbl
CrossesRiverside Drain
Location1.29 M W JCT NM-500/NM-47
RouteState Highway 500
Coordinates35.02723, -106.66902
Functional classUrban Other Principal Arterial

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Deck5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Channel and channel protection5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionMay 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating65.9 US tons
Inventory rating39.5 US tons

Structure

Structure typeSlab
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length98 ft (29.9 m)
Longest span36 ft (11 m)
Deck width38 ft (11.6 m)
Roadway width34 ft (10.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic72,734 (2023)
Projected traffic98,918 by 2043
Trucks13%
Lanes on structure2
Traffic directionOne-way traffic
CarriesHighway and pedestrian
CrossesWaterway
Detour if closed1.2 mi (2 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 proposedNone recorded
Estimated improvement cost—
NavigationNot applicable (no waterway)

Frequently asked questions

When was NM-500 Wbl over Riverside Drain built?

It was built in 1985, making it 40 years old in 2025.

What condition is NM-500 Wbl over Riverside Drain in?

The National Bridge Inventory rates it in fair condition. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound. The last reported inspection was in May 2024.

How much traffic does NM-500 Wbl over Riverside Drain carry?

About 72,734 vehicles per day (2023 count), of which roughly 13% are trucks.

How long is NM-500 Wbl over Riverside Drain?

The structure is 98 ft (29.9 m) long with a longest span of 36 ft (11 m) and a deck 38 ft wide.

Who owns NM-500 Wbl over Riverside Drain?

It is owned by the State Highway Agency.