US Bridges

Mason RD NB over Drainage Ditch

Fair

Fort Bend County, Texas · 0.10 MI S of Harris C/L · Structure no. 120800AA1116006

Built
1987
38 years old
Condition
Fair
inspected August 2023
Type
Box Beam or Girders - Multiple
Prestressed Concrete
Length
123 ft
3 main spans
Daily traffic
10,280
2021 count
Owner
County
County Highway Agency

About this bridge

Mason RD NB over Drainage Ditch is a prestressed concrete box beam or girders - multiple carrying Mason RD NB over Drainage Ditch in Fort Bend County, Texas. It was built in 1987, so it is 38 years old, younger 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 10,280 vehicles a day, roughly 1% of them trucks, projected to reach 1,000 by 2026. The structure is 123 ft (37.5 m) long and 33 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

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CarriesMason RD NB
CrossesDrainage Ditch
Location0.10 MI S of Harris C/L
RouteCounty Highway 0
CountyFort Bend County
StateTexas
Coordinates29.74596, -95.75144
Functional classUrban 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
Deck7 GoodSome minor problems.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure7 GoodSome minor problems.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionAugust 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 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 spans3
Design loadUnknown
Structure length123 ft (37.5 m)
Longest span40 ft (12.2 m)
Deck width33 ft (10 m)
Roadway width24 ft (7.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic10,280 (2021)
Projected traffic1,000 by 2026
Trucks1%
Lanes on structure2
Traffic directionOne-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 proposedNone recorded
Estimated improvement cost$7.5 million
NavigationNo navigation control on waterway

Frequently asked questions

When was Mason RD NB over Drainage Ditch built?

It was built in 1987, making it 38 years old in 2025.

What condition is Mason RD NB 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 August 2023.

How much traffic does Mason RD NB over Drainage Ditch carry?

About 10,280 vehicles per day (2021 count), of which roughly 1% are trucks.

How long is Mason RD NB over Drainage Ditch?

The structure is 123 ft (37.5 m) long with a longest span of 40 ft (12.2 m) and a deck 33 ft wide.

Who owns Mason RD NB over Drainage Ditch?

It is owned by the County Highway Agency.