US Bridges

SH121 Nbl over Riverside Drive

Fair

Tarrant County, Texas · SH121 over N Riverside DR · Structure no. 022200036303030

Built
1968
57 years old
Condition
Fair
inspected May 2024
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
270 ft
3 main spans
Daily traffic
50,036
2022 count
Owner
State
State Highway Agency

About this bridge

SH121 Nbl over Riverside Drive is a prestressed concrete stringer/multi-beam or girder carrying SH121 Nbl over Riverside Drive in Tarrant County, Texas. It was built in 1968, so it is 57 years old, older than the Texas average of 44.4 years.

The most recent inspection reported to the Federal Highway Administration rates it in fair condition with a lowest component rating of 6 out of 9. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

It carries about 50,036 vehicles a day, roughly 7% of them trucks, projected to reach 70,051 by 2042. The structure is 270 ft (82.3 m) long and 71 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

Open in Google Maps
CarriesSH121 Nbl
CrossesRiverside Drive
LocationSH121 over N Riverside DR
RouteState Highway 121
CountyTarrant County
StateTexas
Coordinates32.76832, -97.30179
Functional classUrban Principal Arterial - Other Freeway or Expressway

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure7 GoodSome minor problems.
Last inspectionMay 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation6: Equal to present minimum criteria
Deck geometry6: Equal to 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 spans3 (+1 approach)
Design loadHS 20
Structure length270 ft (82.3 m)
Longest span77 ft (23.5 m)
Deck width71 ft (21.7 m)
Roadway width54 ft (16.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic50,036 (2022)
Projected traffic70,051 by 2042
Trucks7%
Lanes on structure3
Traffic directionOne-way traffic
CarriesHighway
CrossesHighway
Detour if closed1.2 mi (2 km)
TollOn a free road
National Highway SystemYes

Ownership and planned work

OwnerState Highway Agency
Maintained byState Highway Agency
Historic statusPossibly eligible for the National Register; requires further investigation
Work proposedNone recorded
Estimated improvement cost—
NavigationNot applicable (no waterway)

Frequently asked questions

When was SH121 Nbl over Riverside Drive built?

It was built in 1968, making it 57 years old in 2025.

What condition is SH121 Nbl over Riverside Drive in?

The National Bridge Inventory rates it in fair condition. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound. The last reported inspection was in May 2024.

How much traffic does SH121 Nbl over Riverside Drive carry?

About 50,036 vehicles per day (2022 count), of which roughly 7% are trucks.

How long is SH121 Nbl over Riverside Drive?

The structure is 270 ft (82.3 m) long with a longest span of 77 ft (23.5 m) and a deck 71 ft wide.

Who owns SH121 Nbl over Riverside Drive?

It is owned by the State Highway Agency.