US Bridges

Serbin Road over Long Prairie Branch

Fair

Bastrop County, Texas · 1.4 MI E of Karisch RD · Structure no. 140110AA0300001

Built
1920
105 years old
Condition
Fair
inspected December 2023
Type
Slab
Concrete Continuous
Length
30 ft
2 main spans
Daily traffic
34
2022 count
Owner
County
County Highway Agency

About this bridge

Serbin Road over Long Prairie Branch is a concrete continuous slab carrying Serbin Road over Long Prairie Branch in Bastrop County, Texas. It was built in 1920, so it is 105 years old, older 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 34 vehicles a day, roughly 3% of them trucks, projected to reach 114 by 2042. The structure is 30 ft (9.1 m) long and 11 ft wide.

Location

Open in Google Maps
CarriesSerbin Road
CrossesLong Prairie Branch
Location1.4 MI E of Karisch RD
RouteCounty Highway 300
CountyBastrop County
StateTexas
Coordinates30.06475, -97.03711
Functional classRural Local

Condition and inspection

Fair

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

ComponentRatingMeaning
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure7 GoodSome minor problems.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionDecember 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation6: Equal to present minimum criteria
Deck geometry2: Basically intolerable, requiring high priority of replacement
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment4: Meets minimum tolerable limits to be left in place as is
Operating rating36 US tons
Inventory rating27 US tons

Structure

Structure typeSlab
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans2
Design loadUnknown
Structure length30 ft (9.1 m)
Longest span15 ft (4.6 m)
Deck width11 ft (3.4 m)
Roadway width10 ft (3.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic34 (2022)
Projected traffic114 by 2042
Trucks3%
Lanes on structure1
Traffic directionOne-lane bridge for two-way traffic
CarriesHighway
CrossesWaterway
Detour if closed—
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCounty Highway Agency
Maintained byCounty Highway Agency
Historic statusPossibly eligible for the National Register; requires further investigation
Work proposedOther structural work, including hydraulic replacements
Estimated improvement cost$1,000
NavigationNo navigation control on waterway

Frequently asked questions

When was Serbin Road over Long Prairie Branch built?

It was built in 1920, making it 105 years old in 2025.

What condition is Serbin Road over Long Prairie 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 December 2023.

How much traffic does Serbin Road over Long Prairie Branch carry?

About 34 vehicles per day (2022 count), of which roughly 3% are trucks.

How long is Serbin Road over Long Prairie Branch?

The structure is 30 ft (9.1 m) long with a longest span of 15 ft (4.6 m) and a deck 11 ft wide.

Who owns Serbin Road over Long Prairie Branch?

It is owned by the County Highway Agency.