US Bridges

SH 36 over Drainage Ditch

Fair

Brazoria County, Texas · 2.80 MI S of SH 35 · Structure no. 120200018804010

Built
1931
94 years old, rebuilt 1958
Condition
Fair
inspected September 2024
Type
Tee Beam
Concrete
Length
88 ft
3 main spans
Daily traffic
7,651
2023 count
Owner
State
State Highway Agency

About this bridge

SH 36 over Drainage Ditch is a concrete tee beam carrying SH 36 over Drainage Ditch in Brazoria County, Texas. It was built in 1931 and reconstructed in 1958, so it is 94 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 7,651 vehicles a day, roughly 9% of them trucks, projected to reach 9,630 by 2033. The structure is 88 ft (26.7 m) long and 45 ft wide. If it were closed, the detour would be 11.8 mi (19 km).

Location

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CarriesSH 36
CrossesDrainage Ditch
Location2.80 MI S of SH 35
RouteState Highway 36
CountyBrazoria County
StateTexas
Coordinates29.10144, -95.63392
Functional classRural Principal Arterial - Other

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.
Superstructure7 GoodSome minor problems.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionSeptember 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating54 US tons
Inventory rating32 US tons

Structure

Structure typeTee Beam
MaterialConcrete
DeckConcrete, cast-in-place
Main spans3
Design loadUnknown
Structure length88 ft (26.7 m)
Longest span29 ft (8.7 m)
Deck width45 ft (13.8 m)
Roadway width43 ft (13 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic7,651 (2023)
Projected traffic9,630 by 2033
Trucks9%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesRelief for waterway
Detour if closed11.8 mi (19 km)
TollOn a free road
National Highway SystemYes

Ownership and planned work

OwnerState Highway Agency
Maintained byState Highway Agency
Historic statusPossibly eligible for the National Register; requires further investigation
Work proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was SH 36 over Drainage Ditch built?

It was built in 1931, making it 94 years old in 2025. It was reconstructed in 1958.

What condition is SH 36 over Drainage Ditch 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 September 2024.

How much traffic does SH 36 over Drainage Ditch carry?

About 7,651 vehicles per day (2023 count), of which roughly 9% are trucks.

How long is SH 36 over Drainage Ditch?

The structure is 88 ft (26.7 m) long with a longest span of 29 ft (8.7 m) and a deck 45 ft wide.

Who owns SH 36 over Drainage Ditch?

It is owned by the State Highway Agency.