US Bridges

SH 121 Bus NB Conn over SH 121 Toll

Fair

Denton County, Texas · 4.75 MI NE of IH 35E · Structure no. 180610354701003

Built
1999
26 years old
Condition
Fair
inspected October 2023
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
1,548 ft
14 main spans
Daily traffic
27,378
2023 count
Owner
Toll Authority
Local Toll Authority

About this bridge

SH 121 Bus NB Conn over SH 121 Toll is a prestressed concrete stringer/multi-beam or girder carrying SH 121 Bus NB Conn over SH 121 Toll in Denton County, Texas. It was built in 1999, so it is 26 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 27,378 vehicles a day, roughly 2% of them trucks, projected to reach 8,000 by 2033. The structure is 1,548 ft (471.8 m) long and 32 ft wide.

Location

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CarriesSH 121 Bus NB Conn
CrossesSH 121 Toll
Location4.75 MI NE of IH 35E
CountyDenton County
StateTexas
Coordinates33.05073, -96.9226
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 inspectionOctober 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 spans14
Design loadHS 20
Structure length1,548 ft (471.8 m)
Longest span135 ft (41.1 m)
Deck width32 ft (9.8 m)
Roadway width30 ft (9.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic27,378 (2023)
Projected traffic8,000 by 2033
Trucks2%
Lanes on structure1
Traffic directionOne-way traffic
CarriesHighway
CrossesHighway
Detour if closed—
TollOn a toll road
National Highway SystemYes

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 SH 121 Bus NB Conn over SH 121 Toll built?

It was built in 1999, making it 26 years old in 2025.

What condition is SH 121 Bus NB Conn over SH 121 Toll 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 October 2023.

How much traffic does SH 121 Bus NB Conn over SH 121 Toll carry?

About 27,378 vehicles per day (2023 count), of which roughly 2% are trucks.

How long is SH 121 Bus NB Conn over SH 121 Toll?

The structure is 1,548 ft (471.8 m) long with a longest span of 135 ft (41.1 m) and a deck 32 ft wide.

Who owns SH 121 Bus NB Conn over SH 121 Toll?

It is owned by the Local Toll Authority.