US Bridges

DC SH121EB IH35NB over SH 121 / IH 35E

Good

Denton County, Texas · IH 35/SH 121 Interchange · Structure no. 180610019602509

Built
2019
6 years old
Condition
Good
inspected February 2023
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
3,736 ft
33 main spans
Daily traffic
3,700
2010 count
Owner
State
State Highway Agency

About this bridge

DC SH121EB IH35NB over SH 121 / IH 35E is a prestressed concrete stringer/multi-beam or girder carrying DC SH121EB IH35NB over SH 121 / IH 35E in Denton County, Texas. It was built in 2019, so it is 6 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 3,700 vehicles a day, roughly 3% of them trucks, projected to reach 5,800 by 2030. The structure is 3,736 ft (1,138.7 m) long and 28 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Location

Open in Google Maps
CarriesDC SH121EB IH35NB
CrossesSH 121 / IH 35E
LocationIH 35/SH 121 Interchange
CountyDenton County
StateTexas
Coordinates32.99959, -96.96055
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 inspectionFebruary 2023
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation7: Better than present minimum criteria
Deck geometry7: Better than present minimum criteria
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 spans33
Design loadHL 93
Structure length3,736 ft (1,138.7 m)
Longest span138 ft (42.1 m)
Deck width28 ft (8.5 m)
Roadway width25 ft (7.7 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic3,700 (2010)
Projected traffic5,800 by 2030
Trucks3%
Lanes on structure1
Traffic directionOne-way traffic
CarriesFourth level (interchange)
CrossesHighway
Detour if closed1.9 mi (3 km)
TollOn a toll road
National Highway SystemYes

Ownership and planned work

OwnerState Highway Agency
Maintained byPrivate (other than railroad)
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 DC SH121EB IH35NB over SH 121 / IH 35E built?

It was built in 2019, making it 6 years old in 2025.

What condition is DC SH121EB IH35NB over SH 121 / IH 35E 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 February 2023.

How much traffic does DC SH121EB IH35NB over SH 121 / IH 35E carry?

About 3,700 vehicles per day (2010 count), of which roughly 3% are trucks.

How long is DC SH121EB IH35NB over SH 121 / IH 35E?

The structure is 3,736 ft (1,138.7 m) long with a longest span of 138 ft (42.1 m) and a deck 28 ft wide.

Who owns DC SH121EB IH35NB over SH 121 / IH 35E?

It is owned by the State Highway Agency and maintained by the Private (other than railroad).