US Bridges

FM 20 over Lentz Branch

Fair

Bastrop County, Texas · 1.0 MI N of FM 535 · Structure no. 140110011504023

Built
1992
33 years old
Condition
Fair
inspected November 2024
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
150 ft
2 main spans
Daily traffic
5,744
2023 count
Owner
State
State Highway Agency

About this bridge

FM 20 over Lentz Branch is a prestressed concrete stringer/multi-beam or girder carrying FM 20 over Lentz Branch in Bastrop County, Texas. It was built in 1992, so it is 33 years old, younger than the Texas average of 44.4 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 5,744 vehicles a day, roughly 9% of them trucks, projected to reach 6,299 by 2039. The structure is 150 ft (45.7 m) long and 52 ft wide. If it were closed, the detour would be 9.9 mi (16 km).

Location

Open in Google Maps
CarriesFM 20
CrossesLentz Branch
Location1.0 MI N of FM 535
RouteState Highway 20
CountyBastrop County
StateTexas
Coordinates30.017, -97.42949
Functional classRural Minor Arterial

Condition and inspection

Fair

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

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure8 Very GoodNo problems noted.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionNovember 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to 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 typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans2
Design loadHS 20
Structure length150 ft (45.7 m)
Longest span75 ft (22.9 m)
Deck width52 ft (15.9 m)
Roadway width50 ft (15.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic5,744 (2023)
Projected traffic6,299 by 2039
Trucks9%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed9.9 mi (16 km)
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—
NavigationNo navigation control on waterway

Frequently asked questions

When was FM 20 over Lentz Branch built?

It was built in 1992, making it 33 years old in 2025.

What condition is FM 20 over Lentz Branch 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 2024.

How much traffic does FM 20 over Lentz Branch carry?

About 5,744 vehicles per day (2023 count), of which roughly 9% are trucks.

How long is FM 20 over Lentz Branch?

The structure is 150 ft (45.7 m) long with a longest span of 75 ft (22.9 m) and a deck 52 ft wide.

Who owns FM 20 over Lentz Branch?

It is owned by the State Highway Agency.