US Bridges

11-C048 over Unnamed Waterway

Poor

De Baca County, New Mexico · 6.1 MI E US-60 @ MP-332.1 · Structure no. 000000000000858

Built
1933
92 years old
Condition
Poor
inspected July 2024
Type
Stringer/Multi-beam or Girder
Steel
Length
94 ft
3 main spans
Daily traffic
256
2023 count
Owner
County
County Highway Agency

About this bridge

11-C048 over Unnamed Waterway is a steel stringer/multi-beam or girder carrying 11-C048 over Unnamed Waterway in De Baca County, New Mexico. It was built in 1933, so it is 92 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 poor condition with a lowest component rating of 4 out of 9. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.

It carries about 256 vehicles a day, projected to reach 348 by 2043. The structure is 94 ft (28.7 m) long and 22 ft wide. If it were closed, the detour would be 3.1 mi (5 km).

Location

Open in Google Maps
Carries11-C048
CrossesUnnamed Waterway
Location6.1 MI E US-60 @ MP-332.1
RouteCounty Highway 11048
CountyDe Baca County
StateNew Mexico
Coordinates34.43727, -104.06342
Functional classRural Local

Condition and inspection

Poor

The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.

ComponentRatingMeaning
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure4 PoorAdvanced section loss, deterioration, spalling or scour.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionJuly 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourScour critical; foundations unstable for calculated scour conditions
Structural evaluation4: Meets minimum tolerable limits to be left in place as is
Deck geometry3: Basically intolerable, requiring high priority of corrective action
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating67.9 US tons
Inventory rating34 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans3
Design loadH 15
Structure length94 ft (28.7 m)
Longest span31 ft (9.4 m)
Deck width22 ft (6.6 m)
Roadway width18 ft (5.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic256 (2023)
Projected traffic348 by 2043
Trucks—
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.1 mi (5 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCounty Highway Agency
Maintained byCounty Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost$338,000 (2020 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was 11-C048 over Unnamed Waterway built?

It was built in 1933, making it 92 years old in 2025.

What condition is 11-C048 over Unnamed Waterway in?

The National Bridge Inventory rates it in poor condition. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions. The last reported inspection was in July 2024.

How much traffic does 11-C048 over Unnamed Waterway carry?

About 256 vehicles per day (2023 count).

How long is 11-C048 over Unnamed Waterway?

The structure is 94 ft (28.7 m) long with a longest span of 31 ft (9.4 m) and a deck 22 ft wide.

Who owns 11-C048 over Unnamed Waterway?

It is owned by the County Highway Agency.