US Bridges

SH 29 over Smith Branch

Good

Williamson County, Texas · 2.1 MI E of JCT IH 35 · Structure no. 142460033702031

Built
1995
30 years old
Condition
Good
inspected January 2023
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
120 ft
2 main spans
Daily traffic
17,161
2023 count
Owner
State
State Highway Agency

About this bridge

SH 29 over Smith Branch is a prestressed concrete stringer/multi-beam or girder carrying SH 29 over Smith Branch in Williamson County, Texas. It was built in 1995, so it is 30 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 17,161 vehicles a day, roughly 4% of them trucks, projected to reach 15,726 by 2039. The structure is 120 ft (36.6 m) long and 46 ft wide. If it were closed, the detour would be 3.1 mi (5 km).

Location

Open in Google Maps
CarriesSH 29
CrossesSmith Branch
Location2.1 MI E of JCT IH 35
RouteState Highway 29
CountyWilliamson County
StateTexas
Coordinates30.63582, -97.65561
Functional classUrban Other Principal Arterial

Condition and inspection

Good

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

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Channel and channel protection7 GoodSome minor problems.
Last inspectionJanuary 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy8: Equal 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 spans2
Design loadHS 20
Structure length120 ft (36.6 m)
Longest span60 ft (18.3 m)
Deck width46 ft (14 m)
Roadway width44 ft (13.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic17,161 (2023)
Projected traffic15,726 by 2039
Trucks4%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.1 mi (5 km)
TollOn a free road
National Highway SystemYes

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—
NavigationNo navigation control on waterway

Frequently asked questions

When was SH 29 over Smith Branch built?

It was built in 1995, making it 30 years old in 2025.

What condition is SH 29 over Smith 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 January 2023.

How much traffic does SH 29 over Smith Branch carry?

About 17,161 vehicles per day (2023 count), of which roughly 4% are trucks.

How long is SH 29 over Smith Branch?

The structure is 120 ft (36.6 m) long with a longest span of 60 ft (18.3 m) and a deck 46 ft wide.

Who owns SH 29 over Smith Branch?

It is owned by the State Highway Agency.