US Bridges

Bi 40 over IH 40

Good

Deaf Smith County, Texas · 0.5 MI E of N Mexico S/L · Structure no. 040590009001069

Built
1973
52 years old
Condition
Good
inspected November 2024
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
270 ft
2 main spans
Daily traffic
20
2023 count
Owner
State
State Highway Agency

About this bridge

Bi 40 over IH 40 is a prestressed concrete stringer/multi-beam or girder carrying Bi 40 over IH 40 in Deaf Smith County, Texas. It was built in 1973, so it is 52 years old, older than the Texas average of 44.4 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 20 vehicles a day, roughly 57% of them trucks, projected to reach 80 by 2033. The structure is 270 ft (82.3 m) long and 36 ft wide.

Location

Open in Google Maps
CarriesBi 40
CrossesIH 40
Location0.5 MI E of N Mexico S/L
RouteState Highway 40
CountyDeaf Smith County
StateTexas
Coordinates35.18176, -103.03366
Functional classRural Major Collector

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Last inspectionNovember 2024
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation7: Better than present minimum criteria
Deck geometry9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating60 US tons
Inventory rating36 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans2 (+2 approach)
Design loadHS 20
Structure length270 ft (82.3 m)
Longest span90 ft (27.4 m)
Deck width36 ft (11.1 m)
Roadway width33 ft (10.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic20 (2023)
Projected traffic80 by 2033
Trucks57%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesHighway
Detour if closed—
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerState Highway Agency
Maintained byState Highway Agency
Historic statusPossibly eligible for the National Register; requires further investigation
Work proposedNone recorded
Estimated improvement cost—
NavigationNot applicable (no waterway)

Frequently asked questions

When was Bi 40 over IH 40 built?

It was built in 1973, making it 52 years old in 2025.

What condition is Bi 40 over IH 40 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 November 2024.

How much traffic does Bi 40 over IH 40 carry?

About 20 vehicles per day (2023 count), of which roughly 57% are trucks.

How long is Bi 40 over IH 40?

The structure is 270 ft (82.3 m) long with a longest span of 90 ft (27.4 m) and a deck 36 ft wide.

Who owns Bi 40 over IH 40?

It is owned by the State Highway Agency.