US Bridges

FM 106 over Drainage Ditch

Fair

Cameron County, Texas · 0.10 MI E of Lp 499 · Structure no. 210310142503005

Built
1979
46 years old, rebuilt 1993
Condition
Fair
inspected July 2024
Type
Culvert
Concrete
Length
28 ft
3 main spans
Daily traffic
8,093
2024 count
Owner
State
State Highway Agency

About this bridge

FM 106 over Drainage Ditch is a concrete culvert carrying FM 106 over Drainage Ditch in Cameron County, Texas. It was built in 1979 and reconstructed in 1993, so it is 46 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 8,093 vehicles a day, roughly 14% of them trucks, projected to reach 11,060 by 2037. The structure is 28 ft (8.5 m) long and 146 ft wide. If it were closed, the detour would be 3.1 mi (5 km).

CarriesFM 106
CrossesDrainage Ditch
Location0.10 MI E of Lp 499
RouteState Highway 106
StateTexas
Coordinates26.19079, -97.66164
Functional classUrban Minor 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
Channel and channel protection7 GoodSome minor problems.
Culvert6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionJuly 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
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 rating36 US tons
Inventory rating27 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckNot applicable
Main spans3
Design loadUnknown
Structure length28 ft (8.5 m)
Longest span8 ft (2.4 m)
Deck width146 ft (44.5 m)
Roadway width90 ft (27.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic8,093 (2024)
Projected traffic11,060 by 2037
Trucks14%
Lanes on structure5
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.1 mi (5 km)
TollOn a free road
National Highway SystemYes

Ownership and planned work

OwnerState Highway Agency
Maintained byState Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was FM 106 over Drainage Ditch built?

It was built in 1979, making it 46 years old in 2025. It was reconstructed in 1993.

What condition is FM 106 over Drainage Ditch 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 July 2024.

How much traffic does FM 106 over Drainage Ditch carry?

About 8,093 vehicles per day (2024 count), of which roughly 14% are trucks.

How long is FM 106 over Drainage Ditch?

The structure is 28 ft (8.5 m) long with a longest span of 8 ft (2.4 m) and a deck 146 ft wide.

Who owns FM 106 over Drainage Ditch?

It is owned by the State Highway Agency.