US Bridges

SH121NB to IH820WB over SH 121 Ml & Ramps

Good

Tarrant County, Texas · IH 820 at SH 121 · Structure no. 022200036401415

Built
2001
24 years old
Condition
Good
inspected May 2024
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
1,162 ft
3 main spans
Daily traffic
28,100
2018 count
Owner
State
State Highway Agency

About this bridge

SH121NB to IH820WB over SH 121 Ml & Ramps is a steel continuous stringer/multi-beam or girder carrying SH121NB to IH820WB over SH 121 Ml & Ramps in Tarrant County, Texas. It was built in 2001, so it is 24 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 28,100 vehicles a day, projected to reach 39,400 by 2038. The structure is 1,162 ft (354.2 m) long and 28 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

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CarriesSH121NB to IH820WB
CrossesSH 121 Ml & Ramps
LocationIH 820 at SH 121
RouteInterstate 820
CountyTarrant County
StateTexas
Coordinates32.83045, -97.20392
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.
Superstructure8 Very GoodNo problems noted.
Substructure7 GoodSome minor problems.
Last inspectionMay 2024
Inspection intervalevery 24 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 alignment5: Somewhat better than minimum adequacy to tolerate being left in place as is
Operating rating60 US tons
Inventory rating36 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans3 (+4 approach)
Design loadHS 20
Structure length1,162 ft (354.2 m)
Longest span232 ft (70.7 m)
Deck width28 ft (8.5 m)
Roadway width25 ft (7.7 m)
Vertical clearance over deck20 ft (6 m)

Traffic and service

Average daily traffic28,100 (2018)
Projected traffic39,400 by 2038
Trucks0%
Lanes on structure1
Traffic directionOne-way traffic
CarriesThird level (interchange)
CrossesHighway
Detour if closed1.2 mi (2 km)
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 SH121NB to IH820WB over SH 121 Ml & Ramps built?

It was built in 2001, making it 24 years old in 2025.

What condition is SH121NB to IH820WB over SH 121 Ml & Ramps 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 May 2024.

How much traffic does SH121NB to IH820WB over SH 121 Ml & Ramps carry?

About 28,100 vehicles per day (2018 count).

How long is SH121NB to IH820WB over SH 121 Ml & Ramps?

The structure is 1,162 ft (354.2 m) long with a longest span of 232 ft (70.7 m) and a deck 28 ft wide.

Who owns SH121NB to IH820WB over SH 121 Ml & Ramps?

It is owned by the State Highway Agency.