US Bridges

IH 35E SB Conn C over IH 20

Fair

Dallas County, Texas · At IH 20 Interchange · Structure no. 180570237403184

Built
1974
51 years old
Condition
Fair
inspected October 2023
Type
Girder and Floorbeam System
Steel Continuous
Length
1,648 ft
4 main spans
Daily traffic
6,505
2019 count
Owner
State
State Highway Agency

About this bridge

IH 35E SB Conn C over IH 20 is a steel continuous girder and floorbeam system carrying IH 35E SB Conn C over IH 20 in Dallas County, Texas. It was built in 1974, so it is 51 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 6,505 vehicles a day, projected to reach 9,104 by 2040. The structure is 1,648 ft (502.3 m) long and 26 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

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CarriesIH 35E SB Conn C
CrossesIH 20
LocationAt IH 20 Interchange
RouteInterstate 35
CountyDallas County
StateTexas
Coordinates32.64249, -96.82344
Functional classUrban Minor Arterial

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 inspectionOctober 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation6: Equal to present minimum criteria
Deck geometry7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating36 US tons
Inventory rating27 US tons

Structure

Structure typeGirder and Floorbeam System
MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans4 (+17 approach)
Design loadHS 20
Structure length1,648 ft (502.3 m)
Longest span155 ft (47.2 m)
Deck width26 ft (7.9 m)
Roadway width24 ft (7.3 m)
Vertical clearance over deck17 ft (5.1 m)

Traffic and service

Average daily traffic6,505 (2019)
Projected traffic9,104 by 2040
Trucks0%
Lanes on structure1
Traffic directionOne-way traffic
CarriesThird level (interchange)
CrossesHighway
Detour if closed1.2 mi (2 km)
TollOn a free road
National Highway SystemYes
Strategic Highway NetworkSTRAHNET connector

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 35E SB Conn C over IH 20 built?

It was built in 1974, making it 51 years old in 2025.

What condition is IH 35E SB Conn C over IH 20 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 October 2023.

How much traffic does IH 35E SB Conn C over IH 20 carry?

About 6,505 vehicles per day (2019 count).

How long is IH 35E SB Conn C over IH 20?

The structure is 1,648 ft (502.3 m) long with a longest span of 155 ft (47.2 m) and a deck 26 ft wide.

Who owns IH 35E SB Conn C over IH 20?

It is owned by the State Highway Agency.