US Bridges

US 181 NB Conn over US 181

Fair

Nueces County, Texas · 0.65 MI N of Ship Channel · Structure no. 161780010106043

Built
1958
67 years old
Condition
Fair
inspected December 2024
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
561 ft
9 main spans
Daily traffic
4,637
2019 count
Owner
State
State Highway Agency

About this bridge

US 181 NB Conn over US 181 is a prestressed concrete stringer/multi-beam or girder carrying US 181 NB Conn over US 181 in Nueces County, Texas. It was built in 1958, so it is 67 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 4,637 vehicles a day, roughly 5% of them trucks, projected to reach 29,230 by 2030. The structure is 561 ft (171 m) long and 36 ft wide.

CarriesUS 181 NB Conn
CrossesUS 181
Location0.65 MI N of Ship Channel
RouteU.S. Route 181
StateTexas
Coordinates27.82124, -97.39001
Functional classUrban Collector

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.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionDecember 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation6: Equal to present minimum criteria
Deck geometry6: Equal to present minimum criteria
Approach roadway alignment7: Better than present minimum criteria
Operating rating48.9 US tons
Inventory rating36 US tons

Structure

MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans9 (+1 approach)
Design loadOther
Structure length561 ft (171 m)
Longest span70 ft (21.3 m)
Deck width36 ft (11 m)
Roadway width32 ft (9.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic4,637 (2019)
Projected traffic29,230 by 2030
Trucks5%
Lanes on structure2
Traffic directionOne-way traffic
CarriesHighway
CrossesHighway
Detour if closed—
TollOn a free road
National Highway SystemYes

Ownership and planned work

OwnerState Highway Agency
Maintained byState Highway Agency
Historic statusEligible for the National Register of Historic Places
Work proposedNone recorded
Estimated improvement cost—
NavigationNot applicable (no waterway)

Frequently asked questions

When was US 181 NB Conn over US 181 built?

It was built in 1958, making it 67 years old in 2025.

What condition is US 181 NB Conn over US 181 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 December 2024.

How much traffic does US 181 NB Conn over US 181 carry?

About 4,637 vehicles per day (2019 count), of which roughly 5% are trucks.

How long is US 181 NB Conn over US 181?

The structure is 561 ft (171 m) long with a longest span of 70 ft (21.3 m) and a deck 36 ft wide.

Who owns US 181 NB Conn over US 181?

It is owned by the State Highway Agency.