US Bridges

SH 99 Nbml over Franz Road

Good

Harris County, Texas · 1.1 MI N of IH 10 · Structure no. 121020351005066

Built
2014
11 years old
Condition
Good
inspected August 2022
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
327 ft
3 main spans
Daily traffic
28,600
2010 count
Owner
State
State Highway Agency

About this bridge

SH 99 Nbml over Franz Road is a prestressed concrete stringer/multi-beam or girder carrying SH 99 Nbml over Franz Road 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 28,600 vehicles a day, projected to reach 46,200 by 2030. The structure is 327 ft (99.7 m) long and 52 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

Open in Google Maps
CarriesSH 99 Nbml
CrossesFranz Road
Location1.1 MI N of IH 10
CountyHarris County
StateTexas
Coordinates29.80189, -95.77534
Functional classUrban Principal Arterial - Other Freeway or Expressway

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.
Superstructure8 Very GoodNo problems noted.
Substructure7 GoodSome minor problems.
Last inspectionAugust 2022
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation7: Better than present minimum criteria
Deck geometry4: Meets minimum tolerable limits to be left in place as is
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 loadHL 93
Structure length327 ft (99.7 m)
Longest span125 ft (38.1 m)
Deck width52 ft (16 m)
Roadway width50 ft (15.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic28,600 (2010)
Projected traffic46,200 by 2030
Trucks0%
Lanes on structure3
Traffic directionOne-way traffic
CarriesHighway
CrossesHighway
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—
NavigationNot applicable (no waterway)

Frequently asked questions

When was SH 99 Nbml over Franz Road built?

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

What condition is SH 99 Nbml over Franz Road 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 2022.

How much traffic does SH 99 Nbml over Franz Road carry?

About 28,600 vehicles per day (2010 count).

How long is SH 99 Nbml over Franz Road?

The structure is 327 ft (99.7 m) long with a longest span of 125 ft (38.1 m) and a deck 52 ft wide.

Who owns SH 99 Nbml over Franz Road?

It is owned by the State Highway Agency.