US Bridges

SH 99 EB over Cedar Bayou

Fair

Chambers County, Texas · 1.1 MI E of SH 146 · Structure no. 200360318702001

Built
1981
44 years old
Condition
Fair
inspected June 2024
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
2,807 ft
3 main spans
Daily traffic
11,569
2022 count
Owner
State
State Highway Agency

About this bridge

SH 99 EB over Cedar Bayou is a steel continuous stringer/multi-beam or girder carrying SH 99 EB over Cedar Bayou in Chambers County, Texas. It was built in 1981, so it is 44 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 11,569 vehicles a day, roughly 31% of them trucks, projected to reach 22,190 by 2033. The structure is 2,807 ft (855.6 m) long and 50 ft wide. If it were closed, the detour would be 19.9 mi (32 km).

Location

Open in Google Maps
CarriesSH 99 EB
CrossesCedar Bayou
Location1.1 MI E of SH 146
RouteState Highway 99
CountyChambers County
StateTexas
Coordinates29.71968, -94.94344
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
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure7 GoodSome minor problems.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection7 GoodSome minor problems.
Last inspectionJune 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry9: Superior to present desirable criteria
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating75 US tons
Inventory rating31 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans3 (+25 approach)
Design loadHS 20
Structure length2,807 ft (855.6 m)
Longest span280 ft (85.3 m)
Deck width50 ft (15.3 m)
Roadway width49 ft (14.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic11,569 (2022)
Projected traffic22,190 by 2033
Trucks31%
Lanes on structure2
Traffic directionOne-way traffic
CarriesHighway
CrossesWaterway
Detour if closed19.9 mi (32 km)
TollOn a free 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—
NavigationNavigation control on waterway (bridge permit required)

Frequently asked questions

When was SH 99 EB over Cedar Bayou built?

It was built in 1981, making it 44 years old in 2025.

What condition is SH 99 EB over Cedar Bayou 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 June 2024.

How much traffic does SH 99 EB over Cedar Bayou carry?

About 11,569 vehicles per day (2022 count), of which roughly 31% are trucks.

How long is SH 99 EB over Cedar Bayou?

The structure is 2,807 ft (855.6 m) long with a longest span of 280 ft (85.3 m) and a deck 50 ft wide.

Who owns SH 99 EB over Cedar Bayou?

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