US Bridges

Mallard DR over Bull Branch

Good

Williamson County, Texas · 0.74 MI W of SH 95 · Structure no. 142460C00385001

Built
2012
13 years old
Condition
Good
inspected December 2023
Type
Culvert
Concrete
Length
117 ft
12 main spans
Daily traffic
720
2018 count
Owner
City
City or Municipal Highway Agency

About this bridge

Mallard DR over Bull Branch is a concrete culvert carrying Mallard DR over Bull Branch in Williamson County, Texas. It was built in 2012, so it is 13 years old, younger than the Texas average of 44.4 years.

The most recent inspection reported to the Federal Highway Administration rates it in good condition with a lowest component rating of 7 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 720 vehicles a day, roughly 1% of them trucks, projected to reach 1,000 by 2038. The structure is 117 ft (35.7 m) long and 56 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

CarriesMallard DR
CrossesBull Branch
Location0.74 MI W of SH 95
RouteCity Street 0
StateTexas
Coordinates30.58894, -97.425
Functional classUrban Collector

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Culvert7 GoodSome minor problems.
Last inspectionDecember 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Deck geometry9: Superior to present desirable criteria
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating60 US tons
Inventory rating36 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckConcrete, cast-in-place
Main spans12
Design loadHS 20
Structure length117 ft (35.7 m)
Longest span8 ft (2.4 m)
Deck width56 ft (17.2 m)
Roadway width42 ft (12.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic720 (2018)
Projected traffic1,000 by 2038
Trucks1%
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 statusNot eligible for the National Register of Historic Places
Work proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was Mallard DR over Bull Branch built?

It was built in 2012, making it 13 years old in 2025.

What condition is Mallard DR over Bull Branch in?

The National Bridge Inventory rates it in good condition. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted. The last reported inspection was in December 2023.

How much traffic does Mallard DR over Bull Branch carry?

About 720 vehicles per day (2018 count), of which roughly 1% are trucks.

How long is Mallard DR over Bull Branch?

The structure is 117 ft (35.7 m) long with a longest span of 8 ft (2.4 m) and a deck 56 ft wide.

Who owns Mallard DR over Bull Branch?

It is owned by the City or Municipal Highway Agency.