US Bridges

SH 6 over Nantucket DR and Alum CR

Good

Brazos County, Texas · 3.84 MI NW of FM 159 · Structure no. 170210005002182

Built
2006
19 years old
Condition
Good
inspected February 2023
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
795 ft
7 main spans
Daily traffic
37,905
2019 count
Owner
State
State Highway Agency

About this bridge

SH 6 over Nantucket DR and Alum CR is a prestressed concrete stringer/multi-beam or girder carrying SH 6 over Nantucket DR and Alum CR in Brazos County, Texas. It was built in 2006, so it is 19 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 37,905 vehicles a day, roughly 14% of them trucks, projected to reach 36,160 by 2033. The structure is 795 ft (242.3 m) long and 94 ft wide.

CarriesSH 6
CrossesNantucket DR and Alum CR
Location3.84 MI NW of FM 159
RouteState Highway 6
StateTexas
Coordinates30.54353, -96.24185
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 protection8 Very GoodNo problems noted.
Last inspectionFebruary 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than 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 rating60 US tons
Inventory rating36 US tons

Structure

MaterialPrestressed Concrete
DeckConcrete, precast panels
Main spans7 (+1 approach)
Design loadHS 20
Structure length795 ft (242.3 m)
Longest span115 ft (35.1 m)
Deck width94 ft (28.7 m)
Roadway width89 ft (27 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic37,905 (2019)
Projected traffic36,160 by 2033
Trucks14%
Lanes on structure4
Traffic directionTwo-way traffic
CarriesHighway
CrossesHighway and waterway
Detour if closed—
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 Nantucket DR and Alum CR built?

It was built in 2006, making it 19 years old in 2025.

What condition is SH 6 over Nantucket DR and Alum CR 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 February 2023.

How much traffic does SH 6 over Nantucket DR and Alum CR carry?

About 37,905 vehicles per day (2019 count), of which roughly 14% are trucks.

How long is SH 6 over Nantucket DR and Alum CR?

The structure is 795 ft (242.3 m) long with a longest span of 115 ft (35.1 m) and a deck 94 ft wide.

Who owns SH 6 over Nantucket DR and Alum CR?

It is owned by the State Highway Agency.