US Bridges

N Seven Bar Loop over Black Diversion Channel

Fair

Bernalillo County, New Mexico · 0.35 N of Ellison Road NW · Structure no. 000000000008960

Built
1995
30 years old
Condition
Fair
inspected March 2024
Type
Box Beam or Girders - Multiple
Prestressed Concrete
Length
44 ft
1 main span
Daily traffic
4,775
2023 count
Owner
City
City or Municipal Highway Agency

About this bridge

N Seven Bar Loop over Black Diversion Channel is a prestressed concrete box beam or girders - multiple carrying N Seven Bar Loop over Black Diversion Channel in Bernalillo County, New Mexico. It was built in 1995, so it is 30 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 6 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 4,775 vehicles a day, roughly 3% of them trucks, projected to reach 6,494 by 2043. The structure is 44 ft (13.4 m) long and 60 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

CarriesN Seven Bar Loop
CrossesBlack Diversion Channel
Location0.35 N of Ellison Road NW
RouteCity Street 5071
Coordinates35.21181, -106.67178
Functional classUrban Collector

Condition and inspection

Fair

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

ComponentRatingMeaning
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure7 GoodSome minor problems.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionMarch 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry9: Superior to present desirable criteria
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating59 US tons
Inventory rating35.7 US tons

Structure

MaterialPrestressed Concrete
DeckConcrete, precast panels
Main spans1
Design loadHS 20
Structure length44 ft (13.4 m)
Longest span43 ft (13.1 m)
Deck width60 ft (18.3 m)
Roadway width48 ft (14.7 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic4,775 (2023)
Projected traffic6,494 by 2043
Trucks3%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.9 mi (3 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCity or Municipal Highway Agency
Maintained byCity or Municipal 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 N Seven Bar Loop over Black Diversion Channel built?

It was built in 1995, making it 30 years old in 2025.

What condition is N Seven Bar Loop over Black Diversion Channel 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 March 2024.

How much traffic does N Seven Bar Loop over Black Diversion Channel carry?

About 4,775 vehicles per day (2023 count), of which roughly 3% are trucks.

How long is N Seven Bar Loop over Black Diversion Channel?

The structure is 44 ft (13.4 m) long with a longest span of 43 ft (13.1 m) and a deck 60 ft wide.

Who owns N Seven Bar Loop over Black Diversion Channel?

It is owned by the City or Municipal Highway Agency.