US Bridges

Lp 20 Wbml over Mcpherson RD

Good

Webb County, Texas · 1.1 MI E of IH 35 · Structure no. 222400008614191

Built
2014
11 years old
Condition
Good
inspected December 2022
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
290 ft
3 main spans
Daily traffic
15,800
2013 count
Owner
State
State Highway Agency

About this bridge

Lp 20 Wbml over Mcpherson RD is a prestressed concrete stringer/multi-beam or girder carrying Lp 20 Wbml over Mcpherson RD in Webb County, Texas. It was built in 2014, so it is 11 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 15,800 vehicles a day, roughly 5% of them trucks, projected to reach 21,900 by 2033. The structure is 290 ft (88.4 m) long and 58 ft wide.

CarriesLp 20 Wbml
CrossesMcpherson RD
Location1.1 MI E of IH 35
RouteState Highway 20
StateTexas
Coordinates27.60965, -99.47712
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
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Last inspectionDecember 2022
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

MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans3
Design loadHL 93
Structure length290 ft (88.4 m)
Longest span99 ft (30.2 m)
Deck width58 ft (17.7 m)
Roadway width56 ft (17.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic15,800 (2013)
Projected traffic21,900 by 2033
Trucks5%
Lanes on structure3
Traffic directionOne-way traffic
CarriesHighway
CrossesHighway
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—
NavigationNot applicable (no waterway)

Frequently asked questions

When was Lp 20 Wbml over Mcpherson RD built?

It was built in 2014, making it 11 years old in 2025.

What condition is Lp 20 Wbml over Mcpherson RD 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 December 2022.

How much traffic does Lp 20 Wbml over Mcpherson RD carry?

About 15,800 vehicles per day (2013 count), of which roughly 5% are trucks.

How long is Lp 20 Wbml over Mcpherson RD?

The structure is 290 ft (88.4 m) long with a longest span of 99 ft (30.2 m) and a deck 58 ft wide.

Who owns Lp 20 Wbml over Mcpherson RD?

It is owned by the State Highway Agency.