US Bridges

SH 99 over SH 146

Good

Chambers County, Texas · 0.81 MI N of FM 1942 · Structure no. 200360351010262

Built
2022
3 years old
Condition
Good
inspected June 2024
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
980 ft
7 main spans
Daily traffic
3,800
2022 count
Owner
State
State Highway Agency

About this bridge

SH 99 over SH 146 is a prestressed concrete stringer/multi-beam or girder carrying SH 99 over SH 146 in Chambers 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 3,800 vehicles a day, roughly 10% of them trucks, projected to reach 30,000 by 2049. The structure is 980 ft (298.7 m) long and 46 ft wide.

CarriesSH 99
CrossesSH 146
Location0.81 MI N of FM 1942
RouteState Highway 99
StateTexas
Coordinates29.86908, -94.89293
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 inspectionJune 2024
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation8: Equal to present desirable criteria
Deck geometry7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating60 US tons
Inventory rating36 US tons

Structure

MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans7 (+7 approach)
Design loadHL 93
Structure length980 ft (298.7 m)
Longest span155 ft (47.2 m)
Deck width46 ft (14 m)
Roadway width44 ft (13.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic3,800 (2022)
Projected traffic30,000 by 2049
Trucks10%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesHighway
Detour if closed—
TollToll bridge
National Highway SystemYes

Ownership and planned work

OwnerState Highway Agency
Maintained byState Toll Authority
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 over SH 146 built?

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

What condition is SH 99 over SH 146 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 June 2024.

How much traffic does SH 99 over SH 146 carry?

About 3,800 vehicles per day (2022 count), of which roughly 10% are trucks.

How long is SH 99 over SH 146?

The structure is 980 ft (298.7 m) long with a longest span of 155 ft (47.2 m) and a deck 46 ft wide.

Who owns SH 99 over SH 146?

It is owned by the State Highway Agency and maintained by the State Toll Authority.