US Bridges

IH 20 EB Conn D over IH 20/US 175 Interchange

Fair

Dallas County, Texas · 1.38 MI E of ST Augustine · Structure no. 180570237403318

Built
1971
54 years old
Condition
Fair
inspected June 2023
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
2,354 ft
4 main spans
Daily traffic
2,211
2021 count
Owner
State
State Highway Agency

About this bridge

IH 20 EB Conn D over IH 20/US 175 Interchange is a steel continuous stringer/multi-beam or girder carrying IH 20 EB Conn D over IH 20/US 175 Interchange in Dallas County, Texas. It was built in 1971, so it is 54 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 2,211 vehicles a day, roughly 3% of them trucks, projected to reach 3,316 by 2041. The structure is 2,354 ft (717.5 m) long and 26 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Location

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CarriesIH 20 EB Conn D
CrossesIH 20/US 175 Interchange
Location1.38 MI E of ST Augustine
RouteInterstate 20
CountyDallas County
StateTexas
Coordinates32.6907, -96.63228
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.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionJune 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation4: Meets minimum tolerable limits to be left in place as is
Deck geometry7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating36 US tons
Inventory rating20.9 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans4 (+27 approach)
Design loadHS 20
Structure length2,354 ft (717.5 m)
Longest span172 ft (52.4 m)
Deck width26 ft (7.9 m)
Roadway width25 ft (7.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic2,211 (2021)
Projected traffic3,316 by 2041
Trucks3%
Lanes on structure1
Traffic directionOne-way traffic
CarriesFourth level (interchange)
CrossesHighway
Detour if closed1.9 mi (3 km)
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 EB Conn D over IH 20/US 175 Interchange built?

It was built in 1971, making it 54 years old in 2025.

What condition is IH 20 EB Conn D over IH 20/US 175 Interchange 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 EB Conn D over IH 20/US 175 Interchange carry?

About 2,211 vehicles per day (2021 count), of which roughly 3% are trucks.

How long is IH 20 EB Conn D over IH 20/US 175 Interchange?

The structure is 2,354 ft (717.5 m) long with a longest span of 172 ft (52.4 m) and a deck 26 ft wide.

Who owns IH 20 EB Conn D over IH 20/US 175 Interchange?

It is owned by the State Highway Agency.