US Bridges

SH 99 NB over Channel E

Good

Chambers County, Texas · 3.1 MI NE of FM 1405 · Structure no. 200360351010044

Built
2007
18 years old
Condition
Good
inspected June 2024
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
180 ft
3 main spans
Daily traffic
3,755
2022 count
Owner
State
State Highway Agency

About this bridge

SH 99 NB over Channel E is a prestressed concrete stringer/multi-beam or girder carrying SH 99 NB over Channel E in Chambers County, Texas. It was built in 2007, so it is 18 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 3,755 vehicles a day, roughly 9% of them trucks, projected to reach 16,650 by 2031. The structure is 180 ft (54.9 m) long and 41 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

CarriesSH 99 NB
CrossesChannel E
Location3.1 MI NE of FM 1405
StateTexas
Coordinates29.74123, -94.87281
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.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionJune 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Deck geometry6: Equal to present minimum 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, cast-in-place
Main spans3
Design loadHS 20
Structure length180 ft (54.9 m)
Longest span60 ft (18.3 m)
Deck width41 ft (12.4 m)
Roadway width38 ft (11.6 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic3,755 (2022)
Projected traffic16,650 by 2031
Trucks9%
Lanes on structure2
Traffic directionOne-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.2 mi (2 km)
TollOn a toll road
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—
NavigationNo navigation control on waterway

Frequently asked questions

When was SH 99 NB over Channel E built?

It was built in 2007, making it 18 years old in 2025.

What condition is SH 99 NB over Channel E 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 NB over Channel E carry?

About 3,755 vehicles per day (2022 count), of which roughly 9% are trucks.

How long is SH 99 NB over Channel E?

The structure is 180 ft (54.9 m) long with a longest span of 60 ft (18.3 m) and a deck 41 ft wide.

Who owns SH 99 NB over Channel E?

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