FHWA NBI 2024 Inspection record Public-domain dataset

SL 20

Carrying SL 20 over DRAW

0.5 M N OF DEL MAR BLVD, Webb, Texas

Data updated May 2026

FHWA NBI record, refreshed with each annual release.

Good
25 t Inventory load rating

Bridge Snapshot: SL 20

The SL 20 bridge in Webb, Texas carries SL 20 over DRAW. It was built in 1995, making it 31 years old today. It was last reconstructed in 2007, extending its service life. The structure is built primarily of concrete and spans 3 sections, stretching 8.5 meters (28 feet) end to end. Daily traffic averages 37,000 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 culvert 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. Its NBI inventory load rating is 24.5 metric tons.

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

How SL 20 compares

▼ 3.8
Load rating vs Texas average (28.3 t)
Bottom 29%
Lower load rating than 71% of Texas bridges
383
Bridges in Webb · 6 in Poor condition
SL 20 24.5 t
Texas average 28.3 t

Live comparison across Texas.

Historical Sufficiency Rating

PlainBridge-computed
75.8 / 100 - historical 50–79.9 band
Structural adequacy /55
47.8
Serviceability /30
15.0
Essentiality /15
15.0
Special reductions
−2.0

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 How the historical reference is calculated.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
24.5 t
NBI inventory level (metric tons)
Overall Condition
Good

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

Structural Details

Year Built
1995
Last Reconstructed
2007
Material
Concrete
Number of Spans
3
Structure Length
8.5 m (28 ft)
Owner
State Highway Agency
Avg Daily Traffic
37,000 vehicles/day
Structure Number
222400008614208

How to read this record

This page shows what the last federal inspection recorded, not whether SL 20 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 SL 20 against other structures in Webb 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 SL 20?

SL 20 in Webb, Texas on the FHWA's 0–9 scale.

How often is SL 20 inspected?

SL 20'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 37,000 vehicles per day.

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

FHWA retired that reported status beginning with the 2018 archive. SL 20 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 SL 20?

SL 20 has an NBI inventory load rating of 24.5 metric tons.

Who is responsible for maintaining SL 20?

SL 20 is owned and maintained by State Highway Agency.

How old is SL 20 and does age affect safety?

SL 20 was built in 1995, making it 31 years old and last reconstructed in 2007.

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.