US Bridges

IH 20 WB over ST Augustine RD

Fair

Dallas County, Texas · 1.6 MI W of US 175 · Structure no. 180570237403170

Built
1970
55 years old
Condition
Fair
inspected June 2023
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
194 ft
3 main spans
Daily traffic
62,362
2021 count
Owner
State
State Highway Agency

About this bridge

IH 20 WB over ST Augustine RD is a steel continuous stringer/multi-beam or girder carrying IH 20 WB over ST Augustine RD in Dallas County, Texas. It was built in 1970, so it is 55 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 62,362 vehicles a day, roughly 21% of them trucks, projected to reach 87,307 by 2041. The structure is 194 ft (59.1 m) long and 70 ft wide.

CarriesIH 20 WB
CrossesST Augustine RD
Location1.6 MI W of US 175
RouteInterstate 20
StateTexas
Coordinates32.68312, -96.6569
Functional classUrban Principal Arterial - Interstate

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.
Substructure7 GoodSome minor problems.
Last inspectionJune 2023
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 alignment8: Equal to present desirable criteria
Operating rating46 US tons
Inventory rating28 US tons

Structure

MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length194 ft (59.1 m)
Longest span100 ft (30.5 m)
Deck width70 ft (21.3 m)
Roadway width68 ft (20.7 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic62,362 (2021)
Projected traffic87,307 by 2041
Trucks21%
Lanes on structure4
Traffic directionOne-way traffic
CarriesHighway
CrossesHighway
Detour if closed—
TollOn a free road
National Highway SystemYes
Strategic Highway NetworkInterstate STRAHNET route

Ownership and planned work

OwnerState Highway Agency
Maintained byState Highway Agency
Historic statusPossibly eligible for the National Register; requires further investigation
Work proposedNone recorded
Estimated improvement cost—
NavigationNot applicable (no waterway)

Frequently asked questions

When was IH 20 WB over ST Augustine RD built?

It was built in 1970, making it 55 years old in 2025.

What condition is IH 20 WB over ST Augustine RD 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 June 2023.

How much traffic does IH 20 WB over ST Augustine RD carry?

About 62,362 vehicles per day (2021 count), of which roughly 21% are trucks.

How long is IH 20 WB over ST Augustine RD?

The structure is 194 ft (59.1 m) long with a longest span of 100 ft (30.5 m) and a deck 70 ft wide.

Who owns IH 20 WB over ST Augustine RD?

It is owned by the State Highway Agency.