US Bridges

Mile 20 N RD over Main Floodwater Channel

Fair

Hidalgo County, Texas · 0.15 MI W of FM 1015 · Structure no. 211090AA0300001

Built
1980
45 years old
Condition
Fair
inspected June 2024
Type
Stringer/Multi-beam or Girder
Concrete
Length
154 ft
5 main spans
Daily traffic
10
2019 count
Owner
County
County Highway Agency

About this bridge

Mile 20 N RD over Main Floodwater Channel is a concrete stringer/multi-beam or girder carrying Mile 20 N RD over Main Floodwater Channel in Hidalgo County, Texas. It was built in 1980, so it is 45 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 10 vehicles a day, roughly 3% of them trucks, projected to reach 100 by 2030. The structure is 154 ft (46.8 m) long and 28 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Location

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CarriesMile 20 N RD
CrossesMain Floodwater Channel
Location0.15 MI W of FM 1015
RouteCounty Highway 0
CountyHidalgo County
StateTexas
Coordinates26.33719, -97.94486
Functional classRural Local

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.
Superstructure7 GoodSome minor problems.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionJune 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation6: Equal to present minimum criteria
Deck geometry6: Equal to present minimum criteria
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating36 US tons
Inventory rating27 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialConcrete
DeckConcrete, cast-in-place
Main spans5
Design loadUnknown
Structure length154 ft (46.8 m)
Longest span30 ft (9.2 m)
Deck width28 ft (8.6 m)
Roadway width26 ft (7.9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic10 (2019)
Projected traffic100 by 2030
Trucks3%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.9 mi (3 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCounty Highway Agency
Maintained byCounty 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 Mile 20 N RD over Main Floodwater Channel built?

It was built in 1980, making it 45 years old in 2025.

What condition is Mile 20 N RD over Main Floodwater Channel 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 June 2024.

How much traffic does Mile 20 N RD over Main Floodwater Channel carry?

About 10 vehicles per day (2019 count), of which roughly 3% are trucks.

How long is Mile 20 N RD over Main Floodwater Channel?

The structure is 154 ft (46.8 m) long with a longest span of 30 ft (9.2 m) and a deck 28 ft wide.

Who owns Mile 20 N RD over Main Floodwater Channel?

It is owned by the County Highway Agency.