US Bridges

FM 136 over Drainage Ditch

Good

San Patricio County, Texas · 0.50 MI N of SH 35 · Structure no. 162050347401001

Built
1976
49 years old
Condition
Good
inspected April 2024
Type
Culvert
Concrete
Length
40 ft
6 main spans
Daily traffic
3,940
2022 count
Owner
State
State Highway Agency

About this bridge

FM 136 over Drainage Ditch is a concrete culvert carrying FM 136 over Drainage Ditch in San Patricio County, Texas. It was built in 1976, so it is 49 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 3,940 vehicles a day, roughly 10% of them trucks, projected to reach 5,516 by 2042. The structure is 40 ft (12.2 m) long and 57 ft wide. If it were closed, the detour would be 3.1 mi (5 km).

Location

Open in Google Maps
CarriesFM 136
CrossesDrainage Ditch
Location0.50 MI N of SH 35
RouteState Highway 136
CountySan Patricio County
StateTexas
Coordinates27.93281, -97.26711
Functional classRural Major Collector

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Channel and channel protection7 GoodSome minor problems.
Culvert7 GoodSome minor problems.
Last inspectionApril 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourScour evaluation has not been made
Structural evaluation6: Equal to present minimum criteria
Deck geometry9: Superior to present desirable criteria
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating44 US tons
Inventory rating26 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckConcrete, cast-in-place
Main spans6
Design loadHS 20
Structure length40 ft (12.2 m)
Longest span6 ft (1.8 m)
Deck width57 ft (17.5 m)
Roadway width44 ft (13.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic3,940 (2022)
Projected traffic5,516 by 2042
Trucks10%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.1 mi (5 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerState Highway Agency
Maintained byState Highway Agency
Historic statusPossibly eligible for the National Register; requires further investigation
Work proposedOther structural work, including hydraulic replacements
Estimated improvement cost$147,000
NavigationNo navigation control on waterway

Frequently asked questions

When was FM 136 over Drainage Ditch built?

It was built in 1976, making it 49 years old in 2025.

What condition is FM 136 over Drainage Ditch 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 2024.

How much traffic does FM 136 over Drainage Ditch carry?

About 3,940 vehicles per day (2022 count), of which roughly 10% are trucks.

How long is FM 136 over Drainage Ditch?

The structure is 40 ft (12.2 m) long with a longest span of 6 ft (1.8 m) and a deck 57 ft wide.

Who owns FM 136 over Drainage Ditch?

It is owned by the State Highway Agency.