US Bridges

SH 99 over Ditch U101-08-00

Fair

Harris County, Texas · 2.7 MI N of IH 10 · Structure no. 121020351005094

Built
2014
11 years old, rebuilt 2017
Condition
Fair
inspected August 2024
Type
Culvert
Concrete
Length
42 ft
3 main spans
Daily traffic
22,300
2014 count
Owner
State
State Highway Agency

About this bridge

SH 99 over Ditch U101-08-00 is a concrete culvert carrying SH 99 over Ditch U101-08-00 in Harris County, Texas. It was built in 2014 and reconstructed in 2017, so it is 11 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 22,300 vehicles a day, projected to reach 38,800 by 2034. The structure is 42 ft (12.8 m) long. If it were closed, the detour would be 1.2 mi (2 km).

Location

Open in Google Maps
CarriesSH 99
CrossesDitch U101-08-00
Location2.7 MI N of IH 10
CountyHarris County
StateTexas
Coordinates29.82478, -95.76557
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 inspectionAugust 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum 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 typeCulvert
MaterialConcrete
DeckNot applicable
Main spans3
Design loadHL 93
Structure length42 ft (12.8 m)
Longest span12 ft (3.7 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic22,300 (2014)
Projected traffic38,800 by 2034
Trucks0%
Lanes on structure7
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.2 mi (2 km)
TollOn a toll 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 Ditch U101-08-00 built?

It was built in 2014, making it 11 years old in 2025. It was reconstructed in 2017.

What condition is SH 99 over Ditch U101-08-00 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 2024.

How much traffic does SH 99 over Ditch U101-08-00 carry?

About 22,300 vehicles per day (2014 count).

How long is SH 99 over Ditch U101-08-00?

The structure is 42 ft (12.8 m) long with a longest span of 12 ft (3.7 m).

Who owns SH 99 over Ditch U101-08-00?

It is owned by the State Highway Agency.