US Bridges

SH 550 NB over UP RR #1

Good

Cameron County, Texas · 3.20 MI SE of US 77 · Structure no. 210310068401248

Built
2010
15 years old
Condition
Good
inspected March 2023
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
225 ft
3 main spans
Daily traffic
13,400
2010 count
Owner
Toll Authority
Local Toll Authority

About this bridge

SH 550 NB over UP RR #1 is a prestressed concrete stringer/multi-beam or girder carrying SH 550 NB over UP RR #1 in Cameron County, Texas. It was built in 2010, so it is 15 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 13,400 vehicles a day, roughly 5% of them trucks, projected to reach 21,500 by 2030. The structure is 225 ft (68.6 m) long and 41 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

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CarriesSH 550 NB
CrossesUP RR #1
Location3.20 MI SE of US 77
CountyCameron County
StateTexas
Coordinates26.01633, -97.48425
Functional classUrban Other Principal Arterial

Condition and inspection

Good

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

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure8 Very GoodNo problems noted.
Substructure7 GoodSome minor problems.
Last inspectionMarch 2023
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation7: Better than present minimum criteria
Deck geometry6: Equal to present minimum 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 spans3
Design loadHL 93
Structure length225 ft (68.6 m)
Longest span75 ft (22.9 m)
Deck width41 ft (12.5 m)
Roadway width38 ft (11.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic13,400 (2010)
Projected traffic21,500 by 2030
Trucks5%
Lanes on structure2
Traffic directionOne-way traffic
CarriesHighway
CrossesRailroad
Detour if closed1.2 mi (2 km)
TollToll bridge
National Highway SystemYes

Ownership and planned work

OwnerLocal Toll Authority
Maintained byLocal Toll Authority
Historic statusNot eligible for the National Register of Historic Places
Work proposedNone recorded
Estimated improvement cost—
NavigationNot applicable (no waterway)

Frequently asked questions

When was SH 550 NB over UP RR #1 built?

It was built in 2010, making it 15 years old in 2025.

What condition is SH 550 NB over UP RR #1 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 2023.

How much traffic does SH 550 NB over UP RR #1 carry?

About 13,400 vehicles per day (2010 count), of which roughly 5% are trucks.

How long is SH 550 NB over UP RR #1?

The structure is 225 ft (68.6 m) long with a longest span of 75 ft (22.9 m) and a deck 41 ft wide.

Who owns SH 550 NB over UP RR #1?

It is owned by the Local Toll Authority.