US Bridges

51-A001 over Flood Control Ditch

Good

Sierra County, New Mexico · 1.8 MI East Broad Ave · Structure no. 000000000009474

Built
2003
22 years old
Condition
Good
inspected May 2023
Type
Culvert
Concrete
Length
36 ft
3 main spans
Daily traffic
70
2023 count
Owner
City
City or Municipal Highway Agency

About this bridge

51-A001 over Flood Control Ditch is a concrete culvert carrying 51-A001 over Flood Control Ditch in Sierra County, New Mexico. It was built in 2003, so it is 22 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 70 vehicles a day, projected to reach 95 by 2043. The structure is 36 ft (11 m) long. If it were closed, the detour would be 19.9 mi (32 km).

Carries51-A001
CrossesFlood Control Ditch
Location1.8 MI East Broad Ave
RouteCity Street 51001
Coordinates33.12506, -107.26866
Functional classUrban Local

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 protection7 GoodSome minor problems.
Culvert7 GoodSome minor problems.
Last inspectionMay 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment0: Immediate repair necessary to put back in service
Operating rating59.4 US tons
Inventory rating36 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckNot applicable
Main spans3
Design loadHS 20
Structure length36 ft (11 m)
Longest span12 ft (3.7 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic70 (2023)
Projected traffic95 by 2043
Trucks—
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed19.9 mi (32 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 proposedRehabilitation because of general structure deterioration or inadequate strength
Estimated improvement cost$750,000 (2040 estimate)
NavigationNot applicable (no waterway)

Frequently asked questions

When was 51-A001 over Flood Control Ditch built?

It was built in 2003, making it 22 years old in 2025.

What condition is 51-A001 over Flood Control Ditch 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 May 2023.

How much traffic does 51-A001 over Flood Control Ditch carry?

About 70 vehicles per day (2023 count).

How long is 51-A001 over Flood Control Ditch?

The structure is 36 ft (11 m) long with a longest span of 12 ft (3.7 m).

Who owns 51-A001 over Flood Control Ditch?

It is owned by the City or Municipal Highway Agency.