US Bridges

IH 35E Sbml over SH 121 Bus

Good

Denton County, Texas · 4.25 MI NW of Dallas C/L · Structure no. 180610019602213

Built
1981
44 years old, rebuilt 2016
Condition
Good
inspected October 2023
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
414 ft
6 main spans
Daily traffic
99,862
2023 count
Owner
State
State Highway Agency

About this bridge

IH 35E Sbml over SH 121 Bus is a prestressed concrete stringer/multi-beam or girder carrying IH 35E Sbml over SH 121 Bus in Denton County, Texas. It was built in 1981 and reconstructed in 2016, so it is 44 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 99,862 vehicles a day, roughly 8% of them trucks, projected to reach 103,920 by 2033. The structure is 414 ft (126.2 m) long and 73 ft wide.

CarriesIH 35E Sbml
CrossesSH 121 Bus
Location4.25 MI NW of Dallas C/L
RouteInterstate 35
StateTexas
Coordinates33.02985, -96.99279
Functional classUrban Principal Arterial - Interstate

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 inspectionOctober 2023
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation7: Better than present minimum criteria
Deck geometry2: Basically intolerable, requiring high priority of replacement
Approach roadway alignment8: Equal to present desirable criteria
Operating rating60 US tons
Inventory rating36 US tons

Structure

MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans6
Design loadHS 20
Structure length414 ft (126.2 m)
Longest span75 ft (22.9 m)
Deck width73 ft (22.2 m)
Roadway width55 ft (16.7 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic99,862 (2023)
Projected traffic103,920 by 2033
Trucks8%
Lanes on structure5
Traffic directionOne-way traffic
CarriesHighway
CrossesHighway
Detour if closed—
TollOn a free road
National Highway SystemYes
Strategic Highway NetworkInterstate STRAHNET route

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 IH 35E Sbml over SH 121 Bus built?

It was built in 1981, making it 44 years old in 2025. It was reconstructed in 2016.

What condition is IH 35E Sbml over SH 121 Bus 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 October 2023.

How much traffic does IH 35E Sbml over SH 121 Bus carry?

About 99,862 vehicles per day (2023 count), of which roughly 8% are trucks.

How long is IH 35E Sbml over SH 121 Bus?

The structure is 414 ft (126.2 m) long with a longest span of 75 ft (22.9 m) and a deck 73 ft wide.

Who owns IH 35E Sbml over SH 121 Bus?

It is owned by the State Highway Agency.