US Bridges

Williamson RD over Mccommas Creek

Fair

Dallas County, Texas · 0.3 MI S of Mockingbird · Structure no. 1805709W5200002

Built
1964
61 years old
Condition
Fair
inspected February 2023
Type
Slab
Concrete
Length
46 ft
2 main spans
Daily traffic
2,969
2015 count
Owner
City
City or Municipal Highway Agency

About this bridge

Williamson RD over Mccommas Creek is a concrete slab carrying Williamson RD over Mccommas Creek in Dallas County, Texas. It was built in 1964, so it is 61 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 2,969 vehicles a day, projected to reach 4,800 by 2035. The structure is 46 ft (14 m) long and 41 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

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CarriesWilliamson RD
CrossesMccommas Creek
Location0.3 MI S of Mockingbird
RouteCity Street 0
CountyDallas County
StateTexas
Coordinates32.83483, -96.74002
Functional classUrban Local

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionFebruary 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment7: Better than present minimum criteria
Operating rating55 US tons
Inventory rating33 US tons

Structure

Structure typeSlab
MaterialConcrete
DeckConcrete, cast-in-place
Main spans2
Design loadUnknown
Structure length46 ft (14 m)
Longest span23 ft (7 m)
Deck width41 ft (12.5 m)
Roadway width33 ft (10 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic2,969 (2015)
Projected traffic4,800 by 2035
Trucks0%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
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 proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was Williamson RD over Mccommas Creek built?

It was built in 1964, making it 61 years old in 2025.

What condition is Williamson RD over Mccommas Creek 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 February 2023.

How much traffic does Williamson RD over Mccommas Creek carry?

About 2,969 vehicles per day (2015 count).

How long is Williamson RD over Mccommas Creek?

The structure is 46 ft (14 m) long with a longest span of 23 ft (7 m) and a deck 41 ft wide.

Who owns Williamson RD over Mccommas Creek?

It is owned by the City or Municipal Highway Agency.