US Bridges

SH 336 over Old Mission Floodway

Good

Hidalgo County, Texas · 1.75 MI S of US 83 · Structure no. 211090062101006

Built
1969
56 years old, rebuilt 1996
Condition
Good
inspected May 2023
Type
Slab
Concrete Continuous
Length
220 ft
8 main spans
Daily traffic
20,015
2024 count
Owner
State
State Highway Agency

About this bridge

SH 336 over Old Mission Floodway is a concrete continuous slab carrying SH 336 over Old Mission Floodway in Hidalgo County, Texas. It was built in 1969 and reconstructed in 1996, 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 20,015 vehicles a day, roughly 1% of them trucks, projected to reach 25,930 by 2033. The structure is 220 ft (67.1 m) long and 66 ft wide. If it were closed, the detour would be 8.7 mi (14 km).

Location

Open in Google Maps
CarriesSH 336
CrossesOld Mission Floodway
Location1.75 MI S of US 83
RouteState Highway 336
CountyHidalgo County
StateTexas
Coordinates26.16439, -98.23001
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.
Channel and channel protection7 GoodSome minor problems.
Last inspectionMay 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Deck geometry7: Better than present minimum criteria
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating57 US tons
Inventory rating34 US tons

Structure

Structure typeSlab
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans8
Design loadOther
Structure length220 ft (67.1 m)
Longest span30 ft (9.1 m)
Deck width66 ft (20.2 m)
Roadway width64 ft (19.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic20,015 (2024)
Projected traffic25,930 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 Old Mission Floodway built?

It was built in 1969, making it 56 years old in 2025. It was reconstructed in 1996.

What condition is SH 336 over Old Mission Floodway 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 May 2023.

How much traffic does SH 336 over Old Mission Floodway carry?

About 20,015 vehicles per day (2024 count), of which roughly 1% are trucks.

How long is SH 336 over Old Mission Floodway?

The structure is 220 ft (67.1 m) long with a longest span of 30 ft (9.1 m) and a deck 66 ft wide.

Who owns SH 336 over Old Mission Floodway?

It is owned by the State Highway Agency.