US Bridges

SH 99 Wbml over FM 1485

Good

Montgomery County, Texas · 3.5 MI E of IH 69 · Structure no. 121700351007320

Built
2022
3 years old
Condition
Good
inspected December 2022
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
128 ft
1 main span
Daily traffic
15,500
2019 count
Owner
State
State Highway Agency

About this bridge

SH 99 Wbml over FM 1485 is a prestressed concrete stringer/multi-beam or girder carrying SH 99 Wbml over FM 1485 in Montgomery County, Texas. It was built in 2022, so it is 3 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 8 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 15,500 vehicles a day, roughly 5% of them trucks, projected to reach 1 by 1900. The structure is 128 ft (39.1 m) long and 45 ft wide. If it were closed, the detour would be 8.1 mi (13 km).

Location

Open in Google Maps
CarriesSH 99 Wbml
CrossesFM 1485
Location3.5 MI E of IH 69
RouteState Highway 99
CountyMontgomery County
StateTexas
Coordinates30.14633, -95.17761
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
Deck8 Very GoodNo problems noted.
Superstructure8 Very GoodNo problems noted.
Substructure8 Very GoodNo problems noted.
Last inspectionDecember 2022
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation8: Equal to present desirable criteria
Deck geometry9: 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
Design loadHL 93
Structure length128 ft (39.1 m)
Longest span128 ft (39.1 m)
Deck width45 ft (13.7 m)
Roadway width43 ft (13.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic15,500 (2019)
Projected traffic1 by 1900
Trucks5%
Lanes on structure2
Traffic directionOne-way traffic
CarriesHighway
CrossesHighway
Detour if closed8.1 mi (13 km)
TollToll bridge
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 Wbml over FM 1485 built?

It was built in 2022, making it 3 years old in 2025.

What condition is SH 99 Wbml over FM 1485 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 December 2022.

How much traffic does SH 99 Wbml over FM 1485 carry?

About 15,500 vehicles per day (2019 count), of which roughly 5% are trucks.

How long is SH 99 Wbml over FM 1485?

The structure is 128 ft (39.1 m) long with a longest span of 128 ft (39.1 m) and a deck 45 ft wide.

Who owns SH 99 Wbml over FM 1485?

It is owned by the State Highway Agency.