US Bridges

IH 635 EB over Dart RR & County Line RD

Fair

Dallas County, Texas · 8.3 MI W of IH 35E · Structure no. 180570237407343

Built
1979
46 years old, rebuilt 2020
Condition
Fair
inspected August 2023
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
473 ft
6 main spans
Daily traffic
47,751
2020 count
Owner
State
State Highway Agency

About this bridge

IH 635 EB over Dart RR & County Line RD is a prestressed concrete stringer/multi-beam or girder carrying IH 635 EB over Dart RR & County Line RD in Dallas County, Texas. It was built in 1979 and reconstructed in 2020, so it is 46 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 47,751 vehicles a day, roughly 9% of them trucks, projected to reach 95,502 by 2040. The structure is 473 ft (144.2 m) long and 81 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

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CarriesIH 635 EB
CrossesDart RR & County Line RD
Location8.3 MI W of IH 35E
RouteInterstate 635
CountyDallas County
StateTexas
Coordinates32.94712, -97.02832
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 inspectionAugust 2023
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation6: Equal to present minimum criteria
Deck geometry9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating60 US tons
Inventory rating36 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans6
Design loadHS 20
Structure length473 ft (144.2 m)
Longest span85 ft (25.9 m)
Deck width81 ft (24.8 m)
Roadway width79 ft (24.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic47,751 (2020)
Projected traffic95,502 by 2040
Trucks9%
Lanes on structure4
Traffic directionOne-way traffic
CarriesHighway
CrossesHighway and railroad
Detour if closed1.2 mi (2 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 statusNot eligible for the National Register of Historic Places
Work proposedNone recorded
Estimated improvement cost—
NavigationNot applicable (no waterway)

Frequently asked questions

When was IH 635 EB over Dart RR & County Line RD built?

It was built in 1979, making it 46 years old in 2025. It was reconstructed in 2020.

What condition is IH 635 EB over Dart RR & County Line 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 August 2023.

How much traffic does IH 635 EB over Dart RR & County Line RD carry?

About 47,751 vehicles per day (2020 count), of which roughly 9% are trucks.

How long is IH 635 EB over Dart RR & County Line RD?

The structure is 473 ft (144.2 m) long with a longest span of 85 ft (25.9 m) and a deck 81 ft wide.

Who owns IH 635 EB over Dart RR & County Line RD?

It is owned by the State Highway Agency.