US Bridges

FR-4102 over Unnamed Waterway

Fair

Quay County, New Mexico · 37.6 MI E of JCT US-84 · Structure no. 000000000001759

Built
1936
89 years old
Condition
Fair
inspected December 2023
Type
Stringer/Multi-beam or Girder
Steel
Length
81 ft
2 main spans
Daily traffic
139
2023 count
Owner
State
State Highway Agency

About this bridge

FR-4102 over Unnamed Waterway is a steel stringer/multi-beam or girder carrying FR-4102 over Unnamed Waterway in Quay County, New Mexico. It was built in 1936, so it is 89 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 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 139 vehicles a day, roughly 12% of them trucks, projected to reach 189 by 2043. The structure is 81 ft (24.7 m) long and 28 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

Open in Google Maps
CarriesFR-4102
CrossesUnnamed Waterway
Location37.6 MI E of JCT US-84
RouteCounty Highway 41002
CountyQuay County
StateNew Mexico
Coordinates35.10707, -104.02399
Functional classRural Minor 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.
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 protection4 PoorAdvanced section loss, deterioration, spalling or scour.
Last inspectionDecember 2023
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 adequacy6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating42.9 US tons
Inventory rating26.8 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans2
Design loadH 15
Structure length81 ft (24.7 m)
Longest span40 ft (12.2 m)
Deck width28 ft (8.4 m)
Roadway width24 ft (7.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic139 (2023)
Projected traffic189 by 2043
Trucks12%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.2 mi (2 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerState Highway Agency
Maintained byState Highway Agency
Historic statusEligible for the National Register of Historic Places
Work proposedNone recorded
Estimated improvement cost—
NavigationNot applicable (no waterway)

Frequently asked questions

When was FR-4102 over Unnamed Waterway built?

It was built in 1936, making it 89 years old in 2025.

What condition is FR-4102 over Unnamed Waterway 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 December 2023.

How much traffic does FR-4102 over Unnamed Waterway carry?

About 139 vehicles per day (2023 count), of which roughly 12% are trucks.

How long is FR-4102 over Unnamed Waterway?

The structure is 81 ft (24.7 m) long with a longest span of 40 ft (12.2 m) and a deck 28 ft wide.

Who owns FR-4102 over Unnamed Waterway?

It is owned by the State Highway Agency.