US Bridges

SH 99 over Drainage Ditch

Fair

Fort Bend County, Texas · 3.60 MI N of FM 1093 · Structure no. 120800351004015

Built
1994
31 years old
Condition
Fair
inspected December 2024
Type
Culvert
Concrete
Length
36 ft
3 main spans
Daily traffic
98,757
2019 count
Owner
State
State Highway Agency

About this bridge

SH 99 over Drainage Ditch is a concrete culvert carrying SH 99 over Drainage Ditch in Fort Bend County, Texas. It was built in 1994, so it is 31 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 98,757 vehicles a day, roughly 4% of them trucks, projected to reach 60,090 by 2033. The structure is 36 ft (11 m) long and 100 ft wide. If it were closed, the detour would be 8.1 mi (13 km).

Location

Open in Google Maps
CarriesSH 99
CrossesDrainage Ditch
Location3.60 MI N of FM 1093
RouteState Highway 99
CountyFort Bend County
StateTexas
Coordinates29.75193, -95.77592
Functional classUrban Principal Arterial - Other Freeway or Expressway

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Channel and channel protection7 GoodSome minor problems.
Culvert6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionDecember 2024
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 adequacy6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating36 US tons
Inventory rating27 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckNot applicable
Main spans3
Design loadUnknown
Structure length36 ft (11 m)
Longest span8 ft (2.4 m)
Deck width100 ft (30.5 m)
Roadway width52 ft (15.9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic98,757 (2019)
Projected traffic60,090 by 2033
Trucks4%
Lanes on structure6
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed8.1 mi (13 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 SH 99 over Drainage Ditch built?

It was built in 1994, making it 31 years old in 2025.

What condition is SH 99 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 December 2024.

How much traffic does SH 99 over Drainage Ditch carry?

About 98,757 vehicles per day (2019 count), of which roughly 4% are trucks.

How long is SH 99 over Drainage Ditch?

The structure is 36 ft (11 m) long with a longest span of 8 ft (2.4 m) and a deck 100 ft wide.

Who owns SH 99 over Drainage Ditch?

It is owned by the State Highway Agency.