US Bridges

SH 6 over Highland Bayou D.C.

Good

Galveston County, Texas · 0.60 MI NW of FM 2004 · Structure no. 120850019204031

Built
1977
48 years old
Condition
Good
inspected September 2024
Type
Stringer/Multi-beam or Girder
Concrete
Length
251 ft
6 main spans
Daily traffic
12,920
2023 count
Owner
State
State Highway Agency

About this bridge

SH 6 over Highland Bayou D.C. is a concrete stringer/multi-beam or girder carrying SH 6 over Highland Bayou D.C. in Galveston County, Texas. It was built in 1977, so it is 48 years old, older 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 12,920 vehicles a day, roughly 3% of them trucks, projected to reach 12,530 by 2033. The structure is 251 ft (76.5 m) long and 86 ft wide. If it were closed, the detour would be 3.7 mi (6 km).

CarriesSH 6
CrossesHighland Bayou D.C.
Location0.60 MI NW of FM 2004
RouteState Highway 6
StateTexas
Coordinates29.35555, -95.03934
Functional classUrban Other Principal Arterial

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 protection7 GoodSome minor problems.
Last inspectionSeptember 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourScour evaluation has not been made
Structural evaluation7: Better than present minimum criteria
Deck geometry9: Superior to present desirable criteria
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating75 US tons
Inventory rating45 US tons

Structure

MaterialConcrete
DeckConcrete, cast-in-place
Main spans6
Design loadHS 20
Structure length251 ft (76.5 m)
Longest span42 ft (12.8 m)
Deck width86 ft (26.1 m)
Roadway width84 ft (25.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic12,920 (2023)
Projected traffic12,530 by 2033
Trucks3%
Lanes on structure5
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.7 mi (6 km)
TollOn a free road
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—
NavigationNo navigation control on waterway

Frequently asked questions

When was SH 6 over Highland Bayou D.C. built?

It was built in 1977, making it 48 years old in 2025.

What condition is SH 6 over Highland Bayou D.C. 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 September 2024.

How much traffic does SH 6 over Highland Bayou D.C. carry?

About 12,920 vehicles per day (2023 count), of which roughly 3% are trucks.

How long is SH 6 over Highland Bayou D.C.?

The structure is 251 ft (76.5 m) long with a longest span of 42 ft (12.8 m) and a deck 86 ft wide.

Who owns SH 6 over Highland Bayou D.C.?

It is owned by the State Highway Agency.