FHWA NBI 2024 Inspection record Public-domain dataset

SH 66

Carrying SH 66 over PARKER CREEK BRANCH

0.15 MI SW OF FM 552, Rockwall, Texas

Data updated May 2026

FHWA NBI record, refreshed with each annual release.

Good
24 t Inventory load rating

Bridge Snapshot: SH 66

The SH 66 bridge in Rockwall, Texas carries SH 66 over PARKER CREEK BRANCH. It was built in 1992, making it 34 years old today. The structure is built primarily of concrete and spans 3 sections, stretching 10.1 meters (33 feet) end to end. Daily traffic averages 7,728 vehicles, placing it in the moderately-trafficked tier of Texas bridges. It is owned and maintained by State Highway Agency.

The latest FHWA inspection records show culvert at 7/9. The weakest component sits in good condition. All reported major components score above the Poor range. Its NBI inventory load rating is 23.6 metric tons.

Sourced from the FHWA National Bridge Inventory. See our methodology for refresh cadence and NBI release vintage.

How SH 66 compares

▼ 4.7
Load rating vs Texas average (28.3 t)
Bottom 4%
Lower load rating than 96% of Texas bridges
107
Bridges in Rockwall · 2 in Poor condition
SH 66 23.6 t
Texas average 28.3 t

Live comparison across Texas.

Historical Sufficiency Rating

PlainBridge-computed
87.7 / 100 - historical 80–100 band
Structural adequacy /55
46.5
Serviceability /30
28.0
Essentiality /15
14.2
Special reductions
−1.0

FHWA discontinued this calculated item; it does not determine current condition, funding eligibility, posting, or closure. How the historical reference is calculated.

Condition Ratings

Culvert
7/9
Good (7–9)
Inventory Load Rating
23.6 t
NBI inventory level (metric tons)
Overall Condition
Good

Full 0–9 scale + sufficiency-rating breakdown: how condition ratings work.

Structural Details

Year Built
1992
Material
Concrete
Number of Spans
3
Structure Length
10.1 m (33 ft)
Deck Width
12.8 m (42 ft)
Owner
State Highway Agency
Avg Daily Traffic
7,728 vehicles/day
Structure Number
181990000904024

How to read this record

This page shows what the last federal inspection recorded, not whether SH 66 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 66 against other structures in Rockwall 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 66?

SH 66 in Rockwall, Texas on the FHWA's 0–9 scale.

How often is SH 66 inspected?

SH 66'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 7,728 vehicles per day.

What does “structurally deficient” mean in older bridge reports?

FHWA retired that reported status beginning with the 2018 archive. SH 66 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 66?

SH 66 has an NBI inventory load rating of 23.6 metric tons.

Who is responsible for maintaining SH 66?

SH 66 is owned and maintained by State Highway Agency.

How old is SH 66 and does age affect safety?

SH 66 was built in 1992, making it 34 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.

Data sourced from the Federal Highway Administration National Bridge Inventory. See our methodology for details. Retrieved and formatted by PlainBridges

Every figure on PlainBridge is rendered directly from federal source data, no number is typed in by an editor. This page draws directly on federal source data, no figure is typed in by an editor. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error.