US Bridges

SH 45 WB Off Ramp over Detention Basin

Good

Williamson County, Texas · 2.1 MI W of FM 734 · Structure no. 142460068301058

Built
2006
19 years old
Condition
Good
inspected November 2023
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
695 ft
6 main spans
Daily traffic
1,000
2013 count
Owner
State
State Highway Agency

About this bridge

SH 45 WB Off Ramp over Detention Basin is a prestressed concrete stringer/multi-beam or girder carrying SH 45 WB Off Ramp over Detention Basin in Williamson County, Texas. It was built in 2006, so it is 19 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 1,000 vehicles a day, roughly 15% of them trucks, projected to reach 3,760 by 2033. The structure is 695 ft (211.8 m) long and 28 ft wide.

CarriesSH 45 WB Off Ramp
CrossesDetention Basin
Location2.1 MI W of FM 734
StateTexas
Coordinates30.46816, -97.79946
Functional classUrban Principal Arterial - Other Freeway or Expressway

Condition and inspection

Good

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

ComponentRatingMeaning
Deck8 Very GoodNo problems noted.
Superstructure8 Very GoodNo problems noted.
Substructure7 GoodSome minor problems.
Last inspectionNovember 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation7: Better than present minimum criteria
Deck geometry8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating60 US tons
Inventory rating36 US tons

Structure

MaterialPrestressed Concrete
DeckConcrete, precast panels
Main spans6
Design loadHS 20
Structure length695 ft (211.8 m)
Longest span120 ft (36.6 m)
Deck width28 ft (8.5 m)
Roadway width26 ft (7.9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,000 (2013)
Projected traffic3,760 by 2033
Trucks15%
Lanes on structure1
Traffic directionOne-way traffic
CarriesHighway
CrossesOther
Detour if closed—
TollOn a toll 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—
NavigationNot applicable (no waterway)

Frequently asked questions

When was SH 45 WB Off Ramp over Detention Basin built?

It was built in 2006, making it 19 years old in 2025.

What condition is SH 45 WB Off Ramp over Detention Basin 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 November 2023.

How much traffic does SH 45 WB Off Ramp over Detention Basin carry?

About 1,000 vehicles per day (2013 count), of which roughly 15% are trucks.

How long is SH 45 WB Off Ramp over Detention Basin?

The structure is 695 ft (211.8 m) long with a longest span of 120 ft (36.6 m) and a deck 28 ft wide.

Who owns SH 45 WB Off Ramp over Detention Basin?

It is owned by the State Highway Agency.