US Bridges

SH 99 NB over FM 565

Fair

Chambers County, Texas · 2.8 MI S of IH 10 · Structure no. 200360351010032

Built
2007
18 years old
Condition
Fair
inspected May 2024
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
640 ft
6 main spans
Daily traffic
7,510
2022 count
Owner
State
State Highway Agency

About this bridge

SH 99 NB over FM 565 is a prestressed concrete stringer/multi-beam or girder carrying SH 99 NB over FM 565 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 fair condition with a lowest component rating of 6 out of 9. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

It carries about 7,510 vehicles a day, roughly 20% of them trucks, projected to reach 16,650 by 2031. The structure is 640 ft (195.1 m) long and 41 ft wide.

CarriesSH 99 NB
CrossesFM 565
Location2.8 MI S of IH 10
StateTexas
Coordinates29.78571, -94.87164
Functional classUrban Principal Arterial - Other Freeway or Expressway

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionMay 2024
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation6: Equal to present minimum criteria
Deck geometry6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating60 US tons
Inventory rating36 US tons

Structure

MaterialPrestressed Concrete
DeckConcrete, precast panels
Main spans6
Design loadHS 20
Structure length640 ft (195.1 m)
Longest span120 ft (36.6 m)
Deck width41 ft (12.4 m)
Roadway width38 ft (11.6 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic7,510 (2022)
Projected traffic16,650 by 2031
Trucks20%
Lanes on structure2
Traffic directionOne-way traffic
CarriesHighway
CrossesHighway
Detour if closed—
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—
NavigationNot applicable (no waterway)

Frequently asked questions

When was SH 99 NB over FM 565 built?

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

What condition is SH 99 NB over FM 565 in?

The National Bridge Inventory rates it in fair condition. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound. The last reported inspection was in May 2024.

How much traffic does SH 99 NB over FM 565 carry?

About 7,510 vehicles per day (2022 count), of which roughly 20% are trucks.

How long is SH 99 NB over FM 565?

The structure is 640 ft (195.1 m) long with a longest span of 120 ft (36.6 m) and a deck 41 ft wide.

Who owns SH 99 NB over FM 565?

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