US Bridges

US 77 SB over Matz Averr Drain. Ditch

Fair

Cameron County, Texas · 0.25 MI N of FM 2994 · Structure no. 210310003907205

Built
1971
54 years old
Condition
Fair
inspected March 2023
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
395 ft
4 main spans
Daily traffic
9,450
2011 count
Owner
State
State Highway Agency

About this bridge

US 77 SB over Matz Averr Drain. Ditch is a prestressed concrete stringer/multi-beam or girder carrying US 77 SB over Matz Averr Drain. Ditch in Cameron 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 9,450 vehicles a day, roughly 23% of them trucks, projected to reach 14,740 by 2031. The structure is 395 ft (120.4 m) long and 44 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

CarriesUS 77 SB
CrossesMatz Averr Drain. Ditch
Location0.25 MI N of FM 2994
RouteU.S. Route 77
StateTexas
Coordinates26.21526, -97.72125
Functional classUrban Principal Arterial - Other Freeway or Expressway

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.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionMarch 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Deck geometry8: Equal to present desirable criteria
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating60 US tons
Inventory rating36 US tons

Structure

MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans4 (+2 approach)
Design loadHS 20
Structure length395 ft (120.4 m)
Longest span80 ft (24.4 m)
Deck width44 ft (13.5 m)
Roadway width42 ft (12.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic9,450 (2011)
Projected traffic14,740 by 2031
Trucks23%
Lanes on structure2
Traffic directionOne-way traffic
CarriesHighway
CrossesHighway, waterway and railroad
Detour if closed1.2 mi (2 km)
TollOn a free road
National Highway SystemYes
Strategic Highway NetworkNon-Interstate STRAHNET route

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 US 77 SB over Matz Averr Drain. Ditch built?

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

What condition is US 77 SB over Matz Averr Drain. 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 March 2023.

How much traffic does US 77 SB over Matz Averr Drain. Ditch carry?

About 9,450 vehicles per day (2011 count), of which roughly 23% are trucks.

How long is US 77 SB over Matz Averr Drain. Ditch?

The structure is 395 ft (120.4 m) long with a longest span of 80 ft (24.4 m) and a deck 44 ft wide.

Who owns US 77 SB over Matz Averr Drain. Ditch?

It is owned by the State Highway Agency.