US Bridges

SH 99 NB Frtg RD over Bullhead Slough

Fair

Fort Bend County, Texas · 0.40 MI N of US 90A · Structure no. 120800351004021

Built
1994
31 years old
Condition
Fair
inspected September 2024
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
145 ft
1 main span
Daily traffic
17,132
2023 count
Owner
Toll Authority
Local Toll Authority

About this bridge

SH 99 NB Frtg RD over Bullhead Slough is a prestressed concrete stringer/multi-beam or girder carrying SH 99 NB Frtg RD over Bullhead Slough 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 17,132 vehicles a day, roughly 6% of them trucks, projected to reach 15,390 by 2033. The structure is 145 ft (44.2 m) long and 43 ft wide. If it were closed, the detour would be 5 mi (8 km).

Location

Open in Google Maps
CarriesSH 99 NB Frtg RD
CrossesBullhead Slough
Location0.40 MI N of US 90A
RouteState Highway 99
CountyFort Bend County
StateTexas
Coordinates29.60679, -95.6875
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
Deck6 SatisfactoryStructural elements show some minor deterioration.
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
ScourScour evaluation has not been made
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 rating60 US tons
Inventory rating36 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans1 (+2 approach)
Design loadHS 20
Structure length145 ft (44.2 m)
Longest span61 ft (18.6 m)
Deck width43 ft (13 m)
Roadway width40 ft (12.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic17,132 (2023)
Projected traffic15,390 by 2033
Trucks6%
Lanes on structure1
Traffic directionOne-way traffic
CarriesHighway
CrossesWaterway
Detour if closed5 mi (8 km)
TollOn a free road
National Highway SystemYes

Ownership and planned work

OwnerLocal Toll Authority
Maintained byLocal Toll Authority
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 NB Frtg RD over Bullhead Slough built?

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

What condition is SH 99 NB Frtg RD over Bullhead Slough 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 99 NB Frtg RD over Bullhead Slough carry?

About 17,132 vehicles per day (2023 count), of which roughly 6% are trucks.

How long is SH 99 NB Frtg RD over Bullhead Slough?

The structure is 145 ft (44.2 m) long with a longest span of 61 ft (18.6 m) and a deck 43 ft wide.

Who owns SH 99 NB Frtg RD over Bullhead Slough?

It is owned by the Local Toll Authority.