US Bridges

SH 45 WB Ml over US 183

Good

Williamson County, Texas · 2.0 MI W of Parmer LN · Structure no. 142460015104125

Built
2006
19 years old
Condition
Good
inspected November 2023
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
1,492 ft
13 main spans
Daily traffic
17,500
2016 count
Owner
State
State Highway Agency

About this bridge

SH 45 WB Ml over US 183 is a prestressed concrete stringer/multi-beam or girder carrying SH 45 WB Ml over US 183 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 17,500 vehicles a day, roughly 15% of them trucks, projected to reach 20,430 by 2036. The structure is 1,492 ft (454.8 m) long and 58 ft wide.

CarriesSH 45 WB Ml
CrossesUS 183
Location2.0 MI W of Parmer LN
StateTexas
Coordinates30.46981, -97.79349
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
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
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 geometry9: Superior 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 spans13
Design loadHS 20
Structure length1,492 ft (454.8 m)
Longest span120 ft (36.6 m)
Deck width58 ft (17.7 m)
Roadway width56 ft (17.1 m)
Vertical clearance over deck26 ft (7.9 m)

Traffic and service

Average daily traffic17,500 (2016)
Projected traffic20,430 by 2036
Trucks15%
Lanes on structure1
Traffic directionOne-way traffic
CarriesOverpass structure at an interchange
CrossesHighway
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 Ml over US 183 built?

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

What condition is SH 45 WB Ml over US 183 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 Ml over US 183 carry?

About 17,500 vehicles per day (2016 count), of which roughly 15% are trucks.

How long is SH 45 WB Ml over US 183?

The structure is 1,492 ft (454.8 m) long with a longest span of 120 ft (36.6 m) and a deck 58 ft wide.

Who owns SH 45 WB Ml over US 183?

It is owned by the State Highway Agency.