US Bridges

SH 6 NB over SH 164 EB

Fair

McLennan County, Texas · 8.8 MI SE of Loop 340 · Structure no. 091610004901113

Built
1971
54 years old
Condition
Fair
inspected March 2023
Type
Stringer/Multi-beam or Girder
Prestressed Concrete Continuous
Length
240 ft
1 main span
Daily traffic
4,822
2020 count
Owner
State
State Highway Agency

About this bridge

SH 6 NB over SH 164 EB is a prestressed concrete continuous stringer/multi-beam or girder carrying SH 6 NB over SH 164 EB in McLennan 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 4,822 vehicles a day, roughly 22% of them trucks, projected to reach 8,530 by 2037. The structure is 240 ft (73.2 m) long and 44 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

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CarriesSH 6 NB
CrossesSH 164 EB
Location8.8 MI SE of Loop 340
RouteState Highway 6
CountyMcLennan County
StateTexas
Coordinates31.51593, -96.95736
Functional classRural Principal Arterial - Other

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.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionMarch 2023
Inspection intervalevery 48 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 rating60 US tons
Inventory rating36 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete Continuous
DeckConcrete, cast-in-place
Main spans1 (+2 approach)
Design loadHS 20
Structure length240 ft (73.2 m)
Longest span90 ft (27.4 m)
Deck width44 ft (13.4 m)
Roadway width41 ft (12.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic4,822 (2020)
Projected traffic8,530 by 2037
Trucks22%
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 proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost$1.4 million
NavigationNot applicable (no waterway)

Frequently asked questions

When was SH 6 NB over SH 164 EB built?

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

What condition is SH 6 NB over SH 164 EB 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 March 2023.

How much traffic does SH 6 NB over SH 164 EB carry?

About 4,822 vehicles per day (2020 count), of which roughly 22% are trucks.

How long is SH 6 NB over SH 164 EB?

The structure is 240 ft (73.2 m) long with a longest span of 90 ft (27.4 m) and a deck 44 ft wide.

Who owns SH 6 NB over SH 164 EB?

It is owned by the State Highway Agency.