US Bridges

IH 37 NW Loop over Salt Flats

Good

Nueces County, Texas · 0.13 Mile N. of M.L. Dr. · Structure no. 161780007406221

Built
2021
4 years old
Condition
Good
inspected March 2024
Type
Other
Other
Length
85 ft
2 main spans
Daily traffic
11,814
2015 count
Owner
State
State Highway Agency

About this bridge

IH 37 NW Loop over Salt Flats is a other other carrying IH 37 NW Loop over Salt Flats in Nueces County, Texas. It was built in 2021, so it is 4 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 8 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 11,814 vehicles a day, roughly 25% of them trucks, projected to reach 14,770 by 2035. The structure is 85 ft (25.9 m) long and 36 ft wide.

CarriesIH 37 NW Loop
CrossesSalt Flats
Location0.13 Mile N. of M.L. Dr.
RouteState Highway 37
StateTexas
Coordinates27.79955, -97.40884
Functional classUrban Principal Arterial - Interstate

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.
Superstructure8 Very GoodNo problems noted.
Substructure8 Very GoodNo problems noted.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionMarch 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation8: Equal to present desirable criteria
Deck geometry2: Basically intolerable, requiring high priority of replacement
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating60 US tons
Inventory rating36 US tons

Structure

Structure typeOther
MaterialOther
DeckConcrete, cast-in-place
Main spans2
Design loadHL 93
Structure length85 ft (25.9 m)
Longest span42 ft (12.9 m)
Deck width36 ft (11 m)
Roadway width25 ft (7.7 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic11,814 (2015)
Projected traffic14,770 by 2035
Trucks25%
Lanes on structure1
Traffic directionOne-way traffic
CarriesHighway
CrossesWaterway
Detour if closed—
TollOn a free road
National Highway SystemYes

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 IH 37 NW Loop over Salt Flats built?

It was built in 2021, making it 4 years old in 2025.

What condition is IH 37 NW Loop over Salt Flats 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 IH 37 NW Loop over Salt Flats carry?

About 11,814 vehicles per day (2015 count), of which roughly 25% are trucks.

How long is IH 37 NW Loop over Salt Flats?

The structure is 85 ft (25.9 m) long with a longest span of 42 ft (12.9 m) and a deck 36 ft wide.

Who owns IH 37 NW Loop over Salt Flats?

It is owned by the State Highway Agency.