US Bridges

IA-4329 over Unnamed Waterway

Fair

Quay County, New Mexico · W Tucumcari I/C EXIT329 · Structure no. 000000000007212

Built
1971
54 years old
Condition
Fair
inspected November 2021
Type
Culvert
Concrete
Length
23 ft
2 main spans
Daily traffic
53
2023 count
Owner
State
State Highway Agency

About this bridge

IA-4329 over Unnamed Waterway is a concrete culvert carrying IA-4329 over Unnamed Waterway in Quay County, New Mexico. It was built in 1971, so it is 54 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 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 53 vehicles a day, roughly 45% of them trucks, projected to reach 72 by 2043. The structure is 23 ft (7 m) long.

Location

Open in Google Maps
CarriesIA-4329
CrossesUnnamed Waterway
LocationW Tucumcari I/C EXIT329
RouteInterstate 4329
CountyQuay County
StateNew Mexico
Coordinates35.1491, -103.77669
Functional classRural Principal Arterial - Interstate

Condition and inspection

Fair

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

ComponentRatingMeaning
Channel and channel protection7 GoodSome minor problems.
Culvert6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionNovember 2021
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment7: Better than present minimum criteria
Operating rating42.9 US tons
Inventory rating35.7 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckNot applicable
Main spans2
Design loadHS 20 + Mod
Structure length23 ft (7 m)
Longest span10 ft (3 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic53 (2023)
Projected traffic72 by 2043
Trucks45%
Lanes on structure1
Traffic directionOne-way traffic
CarriesHighway
CrossesWaterway
Detour if closed—
TollOn a free road
National Highway SystemNo

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 IA-4329 over Unnamed Waterway built?

It was built in 1971, making it 54 years old in 2025.

What condition is IA-4329 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 November 2021.

How much traffic does IA-4329 over Unnamed Waterway carry?

About 53 vehicles per day (2023 count), of which roughly 45% are trucks.

How long is IA-4329 over Unnamed Waterway?

The structure is 23 ft (7 m) long with a longest span of 10 ft (3 m).

Who owns IA-4329 over Unnamed Waterway?

It is owned by the State Highway Agency.