US Bridges

FM 528 over Drainage Ditch D-4

Good

Brazoria County, Texas · 0.10 MI NE of SH 35 · Structure no. 120200141402026

Built
1993
32 years old
Condition
Good
inspected October 2024
Type
Slab
Prestressed Concrete
Length
102 ft
3 main spans
Daily traffic
20,120
2024 count
Owner
State
State Highway Agency

About this bridge

FM 528 over Drainage Ditch D-4 is a prestressed concrete slab carrying FM 528 over Drainage Ditch D-4 in Brazoria County, Texas. It was built in 1993, so it is 32 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 20,120 vehicles a day, roughly 5% of them trucks, projected to reach 22,530 by 2033. The structure is 102 ft (31.1 m) long and 87 ft wide. If it were closed, the detour would be 9.9 mi (16 km).

Location

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CarriesFM 528
CrossesDrainage Ditch D-4
Location0.10 MI NE of SH 35
RouteState Highway 528
CountyBrazoria County
StateTexas
Coordinates29.4488, -95.23798
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.
Channel and channel protection7 GoodSome minor problems.
Last inspectionOctober 2024
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 typeSlab
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length102 ft (31.1 m)
Longest span33 ft (10.2 m)
Deck width87 ft (26.5 m)
Roadway width86 ft (26.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic20,120 (2024)
Projected traffic22,530 by 2033
Trucks5%
Lanes on structure5
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed9.9 mi (16 km)
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—
NavigationNo navigation control on waterway

Frequently asked questions

When was FM 528 over Drainage Ditch D-4 built?

It was built in 1993, making it 32 years old in 2025.

What condition is FM 528 over Drainage Ditch D-4 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 October 2024.

How much traffic does FM 528 over Drainage Ditch D-4 carry?

About 20,120 vehicles per day (2024 count), of which roughly 5% are trucks.

How long is FM 528 over Drainage Ditch D-4?

The structure is 102 ft (31.1 m) long with a longest span of 33 ft (10.2 m) and a deck 87 ft wide.

Who owns FM 528 over Drainage Ditch D-4?

It is owned by the State Highway Agency.