US Bridges

DC IH35SB SH121EB over IH35E/SH121/TIMBER Crk

Good

Denton County, Texas · IH 35/SH 121 Interchange · Structure no. 180610019602510

Built
2019
6 years old
Condition
Good
inspected February 2023
Type
Stringer/Multi-beam or Girder
Steel
Length
2,076 ft
2 main spans
Daily traffic
6,000
2010 count
Owner
State
State Highway Agency

About this bridge

DC IH35SB SH121EB over IH35E/SH121/TIMBER Crk is a steel stringer/multi-beam or girder carrying DC IH35SB SH121EB over IH35E/SH121/TIMBER Crk 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 6,000 vehicles a day, roughly 3% of them trucks, projected to reach 8,600 by 2030. The structure is 2,076 ft (632.8 m) long and 28 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Location

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CarriesDC IH35SB SH121EB
CrossesIH35E/SH121/TIMBER Crk
LocationIH 35/SH 121 Interchange
CountyDenton County
StateTexas
Coordinates32.99985, -96.95847
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
Deck8 Very GoodNo problems noted.
Superstructure8 Very GoodNo problems noted.
Substructure7 GoodSome minor problems.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionFebruary 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Deck geometry7: Better than present minimum criteria
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating60 US tons
Inventory rating36 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans2 (+15 approach)
Design loadHL 93
Structure length2,076 ft (632.8 m)
Longest span220 ft (67.1 m)
Deck width28 ft (8.5 m)
Roadway width25 ft (7.7 m)
Vertical clearance over deck17 ft (5.1 m)

Traffic and service

Average daily traffic6,000 (2010)
Projected traffic8,600 by 2030
Trucks3%
Lanes on structure1
Traffic directionOne-way traffic
CarriesThird level (interchange)
CrossesHighway and waterway
Detour if closed1.9 mi (3 km)
TollOn a toll road
National Highway SystemYes
Strategic Highway NetworkInterstate STRAHNET route

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—
NavigationNo navigation control on waterway

Frequently asked questions

When was DC IH35SB SH121EB over IH35E/SH121/TIMBER Crk built?

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

What condition is DC IH35SB SH121EB over IH35E/SH121/TIMBER Crk 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 IH35SB SH121EB over IH35E/SH121/TIMBER Crk carry?

About 6,000 vehicles per day (2010 count), of which roughly 3% are trucks.

How long is DC IH35SB SH121EB over IH35E/SH121/TIMBER Crk?

The structure is 2,076 ft (632.8 m) long with a longest span of 220 ft (67.1 m) and a deck 28 ft wide.

Who owns DC IH35SB SH121EB over IH35E/SH121/TIMBER Crk?

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