US Bridges

US 77 NB over Peters Swale

Good

San Patricio County, Texas · 0.50 MI NE of SH 234 · Structure no. 162050037201019

Built
1997
28 years old
Condition
Good
inspected March 2024
Type
Box Beam or Girders - Multiple
Prestressed Concrete
Length
220 ft
4 main spans
Daily traffic
9,020
2019 count
Owner
State
State Highway Agency

About this bridge

US 77 NB over Peters Swale is a prestressed concrete box beam or girders - multiple carrying US 77 NB over Peters Swale in San Patricio County, Texas. It was built in 1997, so it is 28 years old, younger 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 9,020 vehicles a day, roughly 17% of them trucks, projected to reach 16,380 by 2030. The structure is 220 ft (67.1 m) long and 40 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

CarriesUS 77 NB
CrossesPeters Swale
Location0.50 MI NE of SH 234
RouteU.S. Route 77
StateTexas
Coordinates27.95558, -97.57705
Functional classRural Principal Arterial - Other

Condition and inspection

Good

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

ComponentRatingMeaning
Deck8 Very GoodNo problems noted.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionMarch 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Deck geometry7: Better than present minimum 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, precast panels
Main spans4
Design loadHS 20
Structure length220 ft (67.1 m)
Longest span55 ft (16.8 m)
Deck width40 ft (12.2 m)
Roadway width38 ft (11.7 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic9,020 (2019)
Projected traffic16,380 by 2030
Trucks17%
Lanes on structure2
Traffic directionOne-way traffic
CarriesHighway
CrossesWaterway
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 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 US 77 NB over Peters Swale built?

It was built in 1997, making it 28 years old in 2025.

What condition is US 77 NB over Peters Swale 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 March 2024.

How much traffic does US 77 NB over Peters Swale carry?

About 9,020 vehicles per day (2019 count), of which roughly 17% are trucks.

How long is US 77 NB over Peters Swale?

The structure is 220 ft (67.1 m) long with a longest span of 55 ft (16.8 m) and a deck 40 ft wide.

Who owns US 77 NB over Peters Swale?

It is owned by the State Highway Agency.