US Bridges

CR 129 over Drainage Ditch

Good

Brazoria County, Texas · 1.00 MI NE of SH 35 · Structure no. 120200AA0663002

Built
1998
27 years old
Condition
Good
inspected August 2023
Type
Box Beam or Girders - Multiple
Prestressed Concrete
Length
70 ft
1 main span
Daily traffic
6,866
2016 count
Owner
County
County Highway Agency

About this bridge

CR 129 over Drainage Ditch is a prestressed concrete box beam or girders - multiple carrying CR 129 over Drainage Ditch in Brazoria County, Texas. It was built in 1998, so it is 27 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 6,866 vehicles a day, roughly 2% of them trucks, projected to reach 3,880 by 2031. The structure is 70 ft (21.3 m) long and 31 ft wide. If it were closed, the detour would be 5 mi (8 km).

Location

Open in Google Maps
CarriesCR 129
CrossesDrainage Ditch
Location1.00 MI NE of SH 35
RouteCounty Highway 0
CountyBrazoria County
StateTexas
Coordinates29.50588, -95.23613
Functional classRural Local

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.
Channel and channel protection7 GoodSome minor problems.
Last inspectionAugust 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry2: Basically intolerable, requiring high priority of replacement
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating36 US tons
Inventory rating27 US tons

Structure

Structure typeBox Beam or Girders - Multiple
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans1
Design loadUnknown
Structure length70 ft (21.3 m)
Longest span69 ft (21 m)
Deck width31 ft (9.5 m)
Roadway width29 ft (8.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic6,866 (2016)
Projected traffic3,880 by 2031
Trucks2%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed5 mi (8 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$93,000
NavigationNo navigation control on waterway

Frequently asked questions

When was CR 129 over Drainage Ditch built?

It was built in 1998, making it 27 years old in 2025.

What condition is CR 129 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 129 over Drainage Ditch carry?

About 6,866 vehicles per day (2016 count), of which roughly 2% are trucks.

How long is CR 129 over Drainage Ditch?

The structure is 70 ft (21.3 m) long with a longest span of 69 ft (21 m) and a deck 31 ft wide.

Who owns CR 129 over Drainage Ditch?

It is owned by the County Highway Agency.