US Bridges

Mockingbird Lane over Dallas N Tollway

Fair

Dallas County, Texas · 0.7 MI S of Univ Blvd · Structure no. 1805709D0470203

Built
1966
59 years old
Condition
Fair
inspected May 2023
Type
Stringer/Multi-beam or Girder
Steel
Length
98 ft
1 main span
Daily traffic
34,295
2019 count
Owner
Toll Authority
Local Toll Authority

About this bridge

Mockingbird Lane over Dallas N Tollway is a steel stringer/multi-beam or girder carrying Mockingbird Lane over Dallas N Tollway in Dallas County, Texas. It was built in 1966, so it is 59 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 34,295 vehicles a day, roughly 3% of them trucks, projected to reach 41,900 by 2037. The structure is 98 ft (29.9 m) long and 60 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Location

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CarriesMockingbird Lane
CrossesDallas N Tollway
Location0.7 MI S of Univ Blvd
RouteCity Street 0
CountyDallas County
StateTexas
Coordinates32.83669, -96.81482
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.
Substructure7 GoodSome minor problems.
Last inspectionMay 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation7: Better than present minimum criteria
Deck geometry3: Basically intolerable, requiring high priority of corrective action
Approach roadway alignment8: Equal to present desirable criteria
Operating rating75 US tons
Inventory rating45 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans1
Design loadH 20
Structure length98 ft (29.9 m)
Longest span98 ft (29.9 m)
Deck width60 ft (18.3 m)
Roadway width50 ft (15.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic34,295 (2019)
Projected traffic41,900 by 2037
Trucks3%
Lanes on structure4
Traffic directionTwo-way traffic
CarriesHighway
CrossesHighway
Detour if closed1.9 mi (3 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerLocal Toll Authority
Maintained byLocal Toll Authority
Historic statusPossibly eligible for the National Register; requires further investigation
Work proposedOther structural work, including hydraulic replacements
Estimated improvement cost$13,000
NavigationNot applicable (no waterway)

Frequently asked questions

When was Mockingbird Lane over Dallas N Tollway built?

It was built in 1966, making it 59 years old in 2025.

What condition is Mockingbird Lane over Dallas N Tollway 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 May 2023.

How much traffic does Mockingbird Lane over Dallas N Tollway carry?

About 34,295 vehicles per day (2019 count), of which roughly 3% are trucks.

How long is Mockingbird Lane over Dallas N Tollway?

The structure is 98 ft (29.9 m) long with a longest span of 98 ft (29.9 m) and a deck 60 ft wide.

Who owns Mockingbird Lane over Dallas N Tollway?

It is owned by the Local Toll Authority.