US Bridges

SH 121 Nbfr over IH 35E

Good

Denton County, Texas · 1.32 MI NW of Dallas C/L · Structure no. 180610019602293

Built
1995
30 years old
Condition
Good
inspected October 2023
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
218 ft
2 main spans
Daily traffic
10,000
2013 count
Owner
State
State Highway Agency

About this bridge

SH 121 Nbfr over IH 35E is a prestressed concrete stringer/multi-beam or girder carrying SH 121 Nbfr over IH 35E in Denton County, Texas. It was built in 1995, so it is 30 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 10,000 vehicles a day, roughly 5% of them trucks, projected to reach 12,000 by 2033. The structure is 218 ft (66.4 m) long and 48 ft wide.

Location

Open in Google Maps
CarriesSH 121 Nbfr
CrossesIH 35E
Location1.32 MI NW of Dallas C/L
RouteState Highway 121
CountyDenton County
StateTexas
Coordinates32.99933, -96.9588
Functional classUrban Collector

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 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, precast panels
Main spans2
Design loadHS 20
Structure length218 ft (66.4 m)
Longest span109 ft (33.2 m)
Deck width48 ft (14.6 m)
Roadway width40 ft (12.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic10,000 (2013)
Projected traffic12,000 by 2033
Trucks5%
Lanes on structure3
Traffic directionOne-way traffic
CarriesHighway
CrossesHighway
Detour if closed—
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerState Highway Agency
Maintained byLocal Toll Authority
Historic statusNot eligible for the National Register of Historic Places
Work proposedOther structural work, including hydraulic replacements
Estimated improvement cost$21,000
NavigationNot applicable (no waterway)

Frequently asked questions

When was SH 121 Nbfr over IH 35E built?

It was built in 1995, making it 30 years old in 2025.

What condition is SH 121 Nbfr over 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 October 2023.

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

About 10,000 vehicles per day (2013 count), of which roughly 5% are trucks.

How long is SH 121 Nbfr over IH 35E?

The structure is 218 ft (66.4 m) long with a longest span of 109 ft (33.2 m) and a deck 48 ft wide.

Who owns SH 121 Nbfr over IH 35E?

It is owned by the State Highway Agency and maintained by the Local Toll Authority.