SH 121 NB
Carrying SH 121 NB over SH 114 ML & INTL PKWY SB
SH121/114 JCT N OF DFW, Tarrant, Texas
Inventory: FHWA NBI 2024 · last ETL August 2026
FHWA NBI record, refreshed with each annual release.
SH 121 NB in Tarrant, Texas sits above 53% of rated Texas bridges on inventory load rating (33 t), while its 2011 build year is earlier than 23% of Tarrant's recorded-year cohort (2,617 bridges).
SH 121 NB in Tarrant, Texas is rated Good in the FHWA's 2024 National Bridge Inventory. Built in 2011, it carries 3 rated components on the inspecting agency's 0-9 scale, and its weakest reported component scores 7. The lowest applicable rating sets the federal condition category, so this Good result describes the weakest reported component rather than the structure as a whole. No NBI category is a closure decision or a live crossing-safety verdict.
NBI record plate
Structure TX:022200035303435
POST-2000 · PRESTRESS · LONG-SPAN-RUN · TIED-CTRL · HEAVY-ADT · STANDARD-LOAD · CAT-GOOD
- POST-2000 2000+
- PRESTRESS Prestressed concrete
- LONG-SPAN-RUN 8 spans
- TIED-CTRL Tied control
- HEAVY-ADT Heavy ADT
- STANDARD-LOAD Standard load
- CAT-GOOD Good
Inspection-sheet codes from this record’s year, material family, spans, controlling component, ADT, inventory load, and NBI category, not a live closure verdict.
Bridge Snapshot: SH 121 NB
The SH 121 NB bridge in Tarrant, Texas carries SH 121 NB over SH 114 ML & INTL PKWY SB. It was built in 2011, making it 15 years old today. The structure is built primarily of prestressed concrete and spans 8 sections, stretching 450.8 meters (1479 feet) end to end. Daily traffic averages 89,650 vehicles, placing it in the heavily-trafficked tier of Texas bridges. It is owned and maintained by State Highway Agency.
The latest FHWA inspection records show a deck rating of 7/9, superstructure at 8/9, substructure at 7/9. The weakest component sits in good condition. No reported major component scores in the Poor range under the current federal condition thresholds.
How SH 121 NB compares
Age against the county: built in 2011, earlier than 593 of Tarrant's 2,617 bridges with a recorded construction year (23%), against a county median build year of 1991. This is one of the newer structures in its county.
Live comparison across Texas bridges with a recorded inventory load rating (56,715 of 56,729 rated).
SH 121 NB vs every rated Texas bridge
Inventory load rating (metric tons), FHWA NBI, this state
33 Top 47% higher than 53% of 56,715 bridges
rated Texas bridges, bucketed by value
Each bar is a band; taller bars hold more bridges. The dashed line + filled bar mark this entry. Hover or tap any bar for its full count and share, and where it sits relative to this entry.
Source FHWA National Bridge Inventory · August 2026
Condition Ratings
Full 0–9 scale + sufficiency-rating breakdown: how condition ratings work.
Reported 0–9 component ratings from the FHWA NBI. The highlighted component is the lowest reported input to this record’s current condition category; it is not a closure or live crossing-safety decision.
Tarrant inventory by recorded NBI category
Exclusive Good/Fair/Poor bands across all 2,617 bridges in this county. Orthogonal to this structure's component profile above: a county catalog share, not a live crossing-safety verdict.
Structural Details
- Year Built
- 2011
- Material
- Prestressed Concrete
- Number of Spans
- 8
- Structure Length
- 450.8 m (1479 ft)
- Deck Width
- 21.3 m (70 ft)
- Owner
- State Highway Agency
- Avg Daily Traffic
- 89,650 vehicles/day
- Structure Number
- 022200035303435
Condition Analysis
- • The deck (driving surface) is in good condition (7/9), showing no significant deterioration.
- • The superstructure (beams and supports above the deck) is in good condition (8/9), showing no significant deterioration.
- • The substructure (piers and abutments) rates good at 7/9, with no significant deterioration on file.
Location
Data Source
FHWA National Bridge Inventory (NBI).
FHWA NBI Program ↗How to read this record
This page shows what the last federal inspection recorded, not whether SH 121 NB is safe to cross today. Here is how to use it.
- NBI condition ratings reflect the latest record in this annual dataset, not a live status. Current routine inspection intervals are risk-based.
- Learn how the 0–9 condition scale and Good/Fair/Poor categories are defined. How condition ratings work
- Compare SH 121 NB against other structures in Tarrant and across Texas. Texas bridges
- Noticed visible damage or a safety concern? Report it to the agency that owns the bridge, or call 911 in an emergency. How to report a bridge
Condition codes come straight from the FHWA National Bridge Inventory and are not a real-time safety judgment. Only the owning agency, a state DOT, county, or other owner, can post, restrict, or close a bridge.
Frequently Asked Questions
What do the condition ratings mean for SH 121 NB?
SH 121 NB in Tarrant, Texas has a deck rating of 7/9, superstructure rating of 8/9, and substructure rating of 7/9 on the FHWA's 0–9 scale.
How often is SH 121 NB inspected?
SH 121 NB's responsible agency sets its routine interval under FHWA's risk-based inspection rules; this page does not expose the scheduled interval. It carries about 89,650 vehicles per day.
What does “structurally deficient” mean in older bridge reports?
FHWA retired that reported status beginning with the 2018 archive. SH 121 NB is currently shown as Good condition from its component ratings; that category is not a live closure or safety decision.
What is the inventory load rating for SH 121 NB?
SH 121 NB has an NBI inventory load rating of 32.7 metric tons.
Who is responsible for maintaining SH 121 NB?
SH 121 NB is owned and maintained by State Highway Agency.
How old is SH 121 NB and does age affect safety?
SH 121 NB was built in 2011, making it 15 years old.
Disclaimer: Bridge condition data is from the FHWA NBI and reflects the last reported inspection. A Poor condition rating is not a live declaration that a bridge is closed or unsafe for travel. For current closure, posting, or safety information, contact the responsible transportation agency.
Share this inspection record
Send this source-bounded record or download its data card. An NBI condition category is not a closure or live crossing-safety verdict.
Every figure on PlainBridges is rendered directly from federal source data, no number is typed in by an editor. Component ratings, ADT, and condition category on this page are copied from the NBI record for this structure; no figure is typed in by an editor. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of 2024 NBI release. NBI condition categories reflect the latest reported inventory record, not a live safety, closure, or travel decision.