US Bridges

Walnut Hill LN over Dart Blue Line

Fair

Dallas County, Texas · 0.25 MI E of Skillman ST · Structure no. 1805709K4800006

Built
1972
53 years old
Condition
Fair
inspected December 2022
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
140 ft
3 main spans
Daily traffic
22,744
2019 count
Owner
City
City or Municipal Highway Agency

About this bridge

Walnut Hill LN over Dart Blue Line is a prestressed concrete stringer/multi-beam or girder carrying Walnut Hill LN over Dart Blue Line in Dallas County, Texas. It was built in 1972, so it is 53 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 22,744 vehicles a day, projected to reach 12,000 by 2035. The structure is 140 ft (42.7 m) long and 92 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

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CarriesWalnut Hill LN
CrossesDart Blue Line
Location0.25 MI E of Skillman ST
RouteCity Street 0
CountyDallas County
StateTexas
Coordinates32.87865, -96.73065
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.
Superstructure7 GoodSome minor problems.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionDecember 2022
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation6: Equal to present minimum criteria
Deck geometry2: Basically intolerable, requiring high priority of replacement
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 spans3
Design loadHS 20
Structure length140 ft (42.7 m)
Longest span50 ft (15.2 m)
Deck width92 ft (28 m)
Roadway width66 ft (20.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic22,744 (2019)
Projected traffic12,000 by 2035
Trucks0%
Lanes on structure6
Traffic directionTwo-way traffic
CarriesHighway
CrossesRailroad
Detour if closed1.2 mi (2 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCity or Municipal Highway Agency
Maintained byCity or Municipal Highway Agency
Historic statusPossibly eligible for the National Register; requires further investigation
Work proposedOther structural work, including hydraulic replacements
Estimated improvement cost$23,000
NavigationNot applicable (no waterway)

Frequently asked questions

When was Walnut Hill LN over Dart Blue Line built?

It was built in 1972, making it 53 years old in 2025.

What condition is Walnut Hill LN over Dart Blue Line 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 December 2022.

How much traffic does Walnut Hill LN over Dart Blue Line carry?

About 22,744 vehicles per day (2019 count).

How long is Walnut Hill LN over Dart Blue Line?

The structure is 140 ft (42.7 m) long with a longest span of 50 ft (15.2 m) and a deck 92 ft wide.

Who owns Walnut Hill LN over Dart Blue Line?

It is owned by the City or Municipal Highway Agency.