US Bridges

CR 143 over Drainage Ditch

Good

Brazoria County, Texas · 0.01 MI N of CR 128 · Structure no. 120200AA0690002

Built
1999
26 years old
Condition
Good
inspected August 2023
Type
Culvert
Concrete
Length
21 ft
2 main spans
Daily traffic
5,996
2016 count
Owner
County
County Highway Agency

About this bridge

CR 143 over Drainage Ditch is a concrete culvert carrying CR 143 over Drainage Ditch in Brazoria County, Texas. It was built in 1999, so it is 26 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 5,996 vehicles a day, projected to reach 3,500 by 2031. The structure is 21 ft (6.4 m) long and 72 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

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CarriesCR 143
CrossesDrainage Ditch
Location0.01 MI N of CR 128
RouteCounty Highway 143
CountyBrazoria County
StateTexas
Coordinates29.5019, -95.28866
Functional classRural Principal Arterial - Other

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 inspectionAugust 2023
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 adequacy6: Equal to present minimum 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 spans2
Design loadHS 20
Structure length21 ft (6.4 m)
Longest span9 ft (2.7 m)
Deck width72 ft (22 m)
Roadway width50 ft (15.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic5,996 (2016)
Projected traffic3,500 by 2031
Trucks0%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.2 mi (2 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCounty Highway Agency
Maintained byCounty Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost$95,000
NavigationNo navigation control on waterway

Frequently asked questions

When was CR 143 over Drainage Ditch built?

It was built in 1999, making it 26 years old in 2025.

What condition is CR 143 over Drainage Ditch 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 August 2023.

How much traffic does CR 143 over Drainage Ditch carry?

About 5,996 vehicles per day (2016 count).

How long is CR 143 over Drainage Ditch?

The structure is 21 ft (6.4 m) long with a longest span of 9 ft (2.7 m) and a deck 72 ft wide.

Who owns CR 143 over Drainage Ditch?

It is owned by the County Highway Agency.