US Bridges

183A NB Ent Ramp over 183A NB Exit Ramp

Fair

Williamson County, Texas · 1.2 MI N of SH 45 · Structure no. 142460T00183003

Built
2007
18 years old
Condition
Fair
inspected September 2023
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
625 ft
5 main spans
Daily traffic
930
2020 count
Owner
Toll Authority
Local Toll Authority

About this bridge

183A NB Ent Ramp over 183A NB Exit Ramp is a prestressed concrete stringer/multi-beam or girder carrying 183A NB Ent Ramp over 183A NB Exit Ramp in Williamson County, Texas. It was built in 2007, so it is 18 years old, younger 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 930 vehicles a day, roughly 5% of them trucks, projected to reach 12,900 by 2030. The structure is 625 ft (190.5 m) long and 28 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

Open in Google Maps
Carries183A NB Ent Ramp
Crosses183A NB Exit Ramp
Location1.2 MI N of SH 45
CountyWilliamson County
StateTexas
Coordinates30.48466, -97.80434
Functional classUrban Principal Arterial - Other Freeway or Expressway

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.
Last inspectionSeptember 2023
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation6: Equal to present minimum criteria
Deck geometry4: Meets minimum tolerable limits to be left in place as is
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 spans5
Design loadHS 20
Structure length625 ft (190.5 m)
Longest span125 ft (38.1 m)
Deck width28 ft (8.5 m)
Roadway width26 ft (7.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic930 (2020)
Projected traffic12,900 by 2030
Trucks5%
Lanes on structure1
Traffic directionOne-way traffic
CarriesHighway
CrossesHighway
Detour if closed1.2 mi (2 km)
TollOn a toll road
National Highway SystemNo

Ownership and planned work

OwnerLocal Toll Authority
Maintained byLocal Toll Authority
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 183A NB Ent Ramp over 183A NB Exit Ramp built?

It was built in 2007, making it 18 years old in 2025.

What condition is 183A NB Ent Ramp over 183A NB Exit Ramp 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 September 2023.

How much traffic does 183A NB Ent Ramp over 183A NB Exit Ramp carry?

About 930 vehicles per day (2020 count), of which roughly 5% are trucks.

How long is 183A NB Ent Ramp over 183A NB Exit Ramp?

The structure is 625 ft (190.5 m) long with a longest span of 125 ft (38.1 m) and a deck 28 ft wide.

Who owns 183A NB Ent Ramp over 183A NB Exit Ramp?

It is owned by the Local Toll Authority.