US Bridges

SH 6 NB over SH 30

Fair

Brazos County, Texas · 0.87 MI SE of FM 60 · Structure no. 170210004912101

Built
1971
54 years old
Condition
Fair
inspected February 2023
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
175 ft
1 main span
Daily traffic
30,650
2013 count
Owner
State
State Highway Agency

About this bridge

SH 6 NB over SH 30 is a prestressed concrete stringer/multi-beam or girder carrying SH 6 NB over SH 30 in Brazos County, Texas. It was built in 1971, so it is 54 years old, older 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 30,650 vehicles a day, roughly 14% of them trucks, projected to reach 42,920 by 2033. The structure is 175 ft (53.3 m) long and 44 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

Open in Google Maps
CarriesSH 6 NB
CrossesSH 30
Location0.87 MI SE of FM 60
RouteState Highway 6
CountyBrazos County
StateTexas
Coordinates30.62985, -96.30215
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.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionFebruary 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation6: Equal to present minimum criteria
Deck geometry7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating75 US tons
Inventory rating34.9 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans1 (+2 approach)
Design loadHS 20
Structure length175 ft (53.3 m)
Longest span95 ft (29 m)
Deck width44 ft (13.5 m)
Roadway width41 ft (12.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic30,650 (2013)
Projected traffic42,920 by 2033
Trucks14%
Lanes on structure2
Traffic directionOne-way traffic
CarriesHighway
CrossesHighway
Detour if closed1.2 mi (2 km)
TollOn a free road
National Highway SystemYes

Ownership and planned work

OwnerState Highway Agency
Maintained byState Highway Agency
Historic statusPossibly eligible for the National Register; requires further investigation
Work proposedNone recorded
Estimated improvement cost—
NavigationNot applicable (no waterway)

Frequently asked questions

When was SH 6 NB over SH 30 built?

It was built in 1971, making it 54 years old in 2025.

What condition is SH 6 NB over SH 30 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 February 2023.

How much traffic does SH 6 NB over SH 30 carry?

About 30,650 vehicles per day (2013 count), of which roughly 14% are trucks.

How long is SH 6 NB over SH 30?

The structure is 175 ft (53.3 m) long with a longest span of 95 ft (29 m) and a deck 44 ft wide.

Who owns SH 6 NB over SH 30?

It is owned by the State Highway Agency.