US Bridges

SH 99 NB Ramp C over Mayde Creek

Good

Harris County, Texas · 3.4 MI N of IH 10 · Structure no. 121020351005073

Built
2014
11 years old
Condition
Good
inspected August 2024
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
626 ft
3 main spans
Daily traffic
9,000
2010 count
Owner
State
State Highway Agency

About this bridge

SH 99 NB Ramp C over Mayde Creek is a prestressed concrete stringer/multi-beam or girder carrying SH 99 NB Ramp C over Mayde Creek in Harris County, Texas. It was built in 2014, 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 good condition with a lowest component rating of 7 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 9,000 vehicles a day, projected to reach 14,060 by 2030. The structure is 626 ft (190.8 m) long and 29 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

CarriesSH 99 NB Ramp C
CrossesMayde Creek
Location3.4 MI N of IH 10
StateTexas
Coordinates29.83369, -95.75876
Functional classUrban Local

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionAugust 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourScour evaluation has not been made
Structural evaluation7: Better than present minimum criteria
Deck geometry8: Equal to present desirable criteria
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating60 US tons
Inventory rating36 US tons

Structure

MaterialPrestressed Concrete
DeckConcrete, precast panels
Main spans3 (+3 approach)
Design loadHL 93
Structure length626 ft (190.8 m)
Longest span150 ft (45.7 m)
Deck width29 ft (8.7 m)
Roadway width26 ft (7.9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic9,000 (2010)
Projected traffic14,060 by 2030
Trucks0%
Lanes on structure1
Traffic directionOne-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.2 mi (2 km)
TollOn a toll road
National Highway SystemNo

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 NB Ramp C over Mayde Creek built?

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

What condition is SH 99 NB Ramp C over Mayde Creek in?

The National Bridge Inventory rates it in good condition. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted. The last reported inspection was in August 2024.

How much traffic does SH 99 NB Ramp C over Mayde Creek carry?

About 9,000 vehicles per day (2010 count).

How long is SH 99 NB Ramp C over Mayde Creek?

The structure is 626 ft (190.8 m) long with a longest span of 150 ft (45.7 m) and a deck 29 ft wide.

Who owns SH 99 NB Ramp C over Mayde Creek?

It is owned by the State Highway Agency.