US Bridges

SH 6 SB over Loop 340

Good

McLennan County, Texas · 3.4 MI E of IH 35 · Structure no. 091610025809077

Built
1969
56 years old
Condition
Good
inspected April 2023
Type
Slab
Concrete Continuous
Length
307 ft
6 main spans
Daily traffic
3,921
2017 count
Owner
State
State Highway Agency

About this bridge

SH 6 SB over Loop 340 is a concrete continuous slab carrying SH 6 SB over Loop 340 in McLennan County, Texas. It was built in 1969, so it is 56 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 3,921 vehicles a day, roughly 28% of them trucks, projected to reach 5,490 by 2037. The structure is 307 ft (93.6 m) long and 42 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

CarriesSH 6 SB
CrossesLoop 340
Location3.4 MI E of IH 35
RouteState Highway 6
StateTexas
Coordinates31.54709, -97.07005
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.
Last inspectionApril 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation7: Better than present minimum criteria
Deck geometry7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating53 US tons
Inventory rating32 US tons

Structure

Structure typeSlab
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans6
Design loadHS 20
Structure length307 ft (93.6 m)
Longest span60 ft (18.3 m)
Deck width42 ft (12.7 m)
Roadway width39 ft (11.9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic3,921 (2017)
Projected traffic5,490 by 2037
Trucks28%
Lanes on structure2
Traffic directionOne-way traffic
CarriesHighway
CrossesHighway
Detour if closed1.2 mi (2 km)
TollOn a free road
National Highway SystemYes
Strategic Highway NetworkInterstate STRAHNET route

Ownership and planned work

OwnerState Highway Agency
Maintained byState Highway Agency
Historic statusPossibly eligible for the National Register; requires further investigation
Work proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost$1.8 million
NavigationNot applicable (no waterway)

Frequently asked questions

When was SH 6 SB over Loop 340 built?

It was built in 1969, making it 56 years old in 2025.

What condition is SH 6 SB over Loop 340 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 April 2023.

How much traffic does SH 6 SB over Loop 340 carry?

About 3,921 vehicles per day (2017 count), of which roughly 28% are trucks.

How long is SH 6 SB over Loop 340?

The structure is 307 ft (93.6 m) long with a longest span of 60 ft (18.3 m) and a deck 42 ft wide.

Who owns SH 6 SB over Loop 340?

It is owned by the State Highway Agency.