US Bridges

SH 336 over Hackney Lake Floodway

Fair

Hidalgo County, Texas · 3.50 MI S of US 83 · Structure no. 211090062101007

Built
1974
51 years old, rebuilt 1997
Condition
Fair
inspected May 2023
Type
Slab
Concrete Continuous
Length
1,950 ft
78 main spans
Daily traffic
19,545
2024 count
Owner
State
State Highway Agency

About this bridge

SH 336 over Hackney Lake Floodway is a concrete continuous slab carrying SH 336 over Hackney Lake Floodway in Hidalgo County, Texas. It was built in 1974 and reconstructed in 1997, so it is 51 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 5 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 19,545 vehicles a day, roughly 1% of them trucks, projected to reach 25,360 by 2033. The structure is 1,950 ft (594.4 m) long and 79 ft wide. If it were closed, the detour would be 8.7 mi (14 km).

Location

Open in Google Maps
CarriesSH 336
CrossesHackney Lake Floodway
Location3.50 MI S of US 83
RouteState Highway 336
CountyHidalgo County
StateTexas
Coordinates26.14208, -98.24042
Functional classUrban Other Principal Arterial

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.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionMay 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourScour evaluation has not been made
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry9: Superior to present desirable criteria
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating58 US tons
Inventory rating34.9 US tons

Structure

Structure typeSlab
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans78
Design loadHS 20
Structure length1,950 ft (594.4 m)
Longest span25 ft (7.6 m)
Deck width79 ft (24 m)
Roadway width75 ft (22.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic19,545 (2024)
Projected traffic25,360 by 2033
Trucks1%
Lanes on structure4
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed8.7 mi (14 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—
NavigationNo navigation control on waterway

Frequently asked questions

When was SH 336 over Hackney Lake Floodway built?

It was built in 1974, making it 51 years old in 2025. It was reconstructed in 1997.

What condition is SH 336 over Hackney Lake Floodway 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 May 2023.

How much traffic does SH 336 over Hackney Lake Floodway carry?

About 19,545 vehicles per day (2024 count), of which roughly 1% are trucks.

How long is SH 336 over Hackney Lake Floodway?

The structure is 1,950 ft (594.4 m) long with a longest span of 25 ft (7.6 m) and a deck 79 ft wide.

Who owns SH 336 over Hackney Lake Floodway?

It is owned by the State Highway Agency.