US Bridges

South Adams ST over Rio Grande River

Fair

Maverick County, Texas · 0.70 MI SW of FM 1021 · Structure no. 221590B00010001

Built
1999
26 years old
Condition
Fair
inspected October 2023
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
1,313 ft
13 main spans
Daily traffic
11,200
2010 count
Owner
City
City or Municipal Highway Agency

About this bridge

South Adams ST over Rio Grande River is a prestressed concrete stringer/multi-beam or girder carrying South Adams ST over Rio Grande River in Maverick County, Texas. It was built in 1999, so it is 26 years old, younger 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 11,200 vehicles a day, projected to reach 24,278 by 2028. The structure is 1,313 ft (400.2 m) long and 84 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

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CarriesSouth Adams ST
CrossesRio Grande River
Location0.70 MI SW of FM 1021
CountyMaverick County
StateTexas
Coordinates28.69824, -100.50755
Functional classUrban 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
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure8 Very GoodNo problems noted.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection7 GoodSome minor problems.
Last inspectionOctober 2023
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 geometry3: Basically intolerable, requiring high priority of corrective action
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating60 US tons
Inventory rating36 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans13 (+1 approach)
Design loadHS 20
Structure length1,313 ft (400.2 m)
Longest span101 ft (30.8 m)
Deck width84 ft (25.6 m)
Roadway width72 ft (21.9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic11,200 (2010)
Projected traffic24,278 by 2028
Trucks0%
Lanes on structure6
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.2 mi (2 km)
TollToll bridge
National Highway SystemYes

Ownership and planned work

OwnerCity or Municipal Highway Agency
Maintained byCity or Municipal 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 South Adams ST over Rio Grande River built?

It was built in 1999, making it 26 years old in 2025.

What condition is South Adams ST over Rio Grande River 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 October 2023.

How much traffic does South Adams ST over Rio Grande River carry?

About 11,200 vehicles per day (2010 count).

How long is South Adams ST over Rio Grande River?

The structure is 1,313 ft (400.2 m) long with a longest span of 101 ft (30.8 m) and a deck 84 ft wide.

Who owns South Adams ST over Rio Grande River?

It is owned by the City or Municipal Highway Agency.