US Bridges

Lp 20 over Drain

Good

Webb County, Texas · 1.25 MI W of IH 35 · Structure no. 222400008614182

Built
2000
25 years old
Condition
Good
inspected November 2022
Type
Culvert
Concrete
Length
78 ft
7 main spans
Daily traffic
37,000
2011 count
Owner
State
State Highway Agency

About this bridge

Lp 20 over Drain is a concrete culvert carrying Lp 20 over Drain in Webb County, Texas. It was built in 2000, so it is 25 years old, younger 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 37,000 vehicles a day, roughly 5% of them trucks, projected to reach 57,720 by 2031. The structure is 78 ft (23.8 m) long and 379 ft wide.

CarriesLp 20
CrossesDrain
Location1.25 MI W of IH 35
RouteState Highway 20
StateTexas
Coordinates27.60274, -99.51332
Functional classUrban Other Principal Arterial

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 inspectionNovember 2022
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Deck geometry9: Superior to present desirable criteria
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating60 US tons
Inventory rating36 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckConcrete, cast-in-place
Main spans7
Design loadHS 20
Structure length78 ft (23.8 m)
Longest span10 ft (3 m)
Deck width379 ft (115.4 m)
Roadway width191 ft (58.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic37,000 (2011)
Projected traffic57,720 by 2031
Trucks5%
Lanes on structure11
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed—
TollOn a free road
National Highway SystemYes

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—
NavigationNo navigation control on waterway

Frequently asked questions

When was Lp 20 over Drain built?

It was built in 2000, making it 25 years old in 2025.

What condition is Lp 20 over Drain 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 2022.

How much traffic does Lp 20 over Drain carry?

About 37,000 vehicles per day (2011 count), of which roughly 5% are trucks.

How long is Lp 20 over Drain?

The structure is 78 ft (23.8 m) long with a longest span of 10 ft (3 m) and a deck 379 ft wide.

Who owns Lp 20 over Drain?

It is owned by the State Highway Agency.