US Bridges

SH 99 over Oyster Creek

Fair

Fort Bend County, Texas · 5.85 MI N of US 59 · Structure no. 120800351004026

Built
1994
31 years old
Condition
Fair
inspected September 2024
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
240 ft
3 main spans
Daily traffic
53,643
2023 count
Owner
Toll Authority
Local Toll Authority

About this bridge

SH 99 over Oyster Creek is a prestressed concrete stringer/multi-beam or girder carrying SH 99 over Oyster Creek 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 53,643 vehicles a day, roughly 6% of them trucks, projected to reach 75,100 by 2042. The structure is 240 ft (73.2 m) long and 67 ft wide. If it were closed, the detour would be 5 mi (8 km).

Location

Open in Google Maps
CarriesSH 99
CrossesOyster Creek
Location5.85 MI N of US 59
RouteState Highway 99
CountyFort Bend County
StateTexas
Coordinates29.63745, -95.70461
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
Deck7 GoodSome minor problems.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection7 GoodSome minor problems.
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 geometry4: Meets minimum tolerable limits to be 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 spans3
Design loadHS 20
Structure length240 ft (73.2 m)
Longest span78 ft (23.8 m)
Deck width67 ft (20.4 m)
Roadway width62 ft (18.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic53,643 (2023)
Projected traffic75,100 by 2042
Trucks6%
Lanes on structure4
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed5 mi (8 km)
TollOn a toll 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 over Oyster Creek built?

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

What condition is SH 99 over Oyster Creek 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 over Oyster Creek carry?

About 53,643 vehicles per day (2023 count), of which roughly 6% are trucks.

How long is SH 99 over Oyster Creek?

The structure is 240 ft (73.2 m) long with a longest span of 78 ft (23.8 m) and a deck 67 ft wide.

Who owns SH 99 over Oyster Creek?

It is owned by the Local Toll Authority.