31st St SE
Carrying 31st St SE over Branch of Big Sandy Crk
0.1 Mi S of Mahaffey St, Lamar, Texas
Inventory: FHWA NBI 2024 · last ETL August 2026
FHWA NBI record, refreshed with each annual release.
31st St SE in Lamar, Texas sits above 24% of rated Texas bridges on inventory load rating (25 t), while its 1975 build year is earlier than 62% of Lamar's recorded-year cohort (307 bridges).
31st St SE in Lamar, Texas is rated Good in the FHWA's 2024 National Bridge Inventory. Built in 1975, it carries 1 rated component 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:011390B01290001
INTERSTATE-ERA · CONCRETE · MULTI-SPAN · CULVERT-LED · LOCAL-ADT · STANDARD-LOAD · CAT-GOOD
- INTERSTATE-ERA 1950–1979
- CONCRETE Concrete
- MULTI-SPAN 3 spans
- CULVERT-LED Culvert-led
- LOCAL-ADT Local 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: 31st St SE
The 31st St SE bridge in Lamar, Texas carries 31st St SE over Branch of Big Sandy Crk. It was built in 1975, making it 51 years old today. The structure is built primarily of concrete and spans 3 sections, stretching 8.2 meters (27 feet) end to end. Daily traffic averages 247 vehicles, placing it in the lower-traffic tier of Texas bridges. It is owned and maintained by City/Municipal Highway Agency.
The latest FHWA inspection records show culvert at 7/9. The weakest component sits in good condition. None of this bridge's reported major components fall into the Poor condition range.
How 31st St SE compares
Age against the county: built in 1975, earlier than 191 of Lamar's 307 bridges with a recorded construction year (62%), against a county median build year of 1991. Age is not a defect on its own, but it is the population from which future Poor ratings are drawn.
Live comparison across Texas bridges with a recorded inventory load rating (56,715 of 56,729 rated).
31st St SE vs every rated Texas bridge
Inventory load rating (metric tons), FHWA NBI, this state
25 Top 76% higher than 24% 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.
Lamar inventory by recorded NBI category
Exclusive Good/Fair/Poor bands across all 307 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
- 1975
- Material
- Concrete
- Number of Spans
- 3
- Structure Length
- 8.2 m (27 ft)
- Deck Width
- 15.0 m (49 ft)
- Owner
- City/Municipal Highway Agency
- Avg Daily Traffic
- 247 vehicles/day
- Structure Number
- 011390B01290001
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 31st St SE 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 31st St SE against other structures in Lamar 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 31st St SE?
31st St SE in Lamar, Texas on the FHWA's 0–9 scale.
How often is 31st St SE inspected?
31st St SE'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 247 vehicles per day.
What does “structurally deficient” mean in older bridge reports?
FHWA retired that reported status beginning with the 2018 archive. 31st St SE 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 31st St SE?
31st St SE has an NBI inventory load rating of 24.5 metric tons.
Who is responsible for maintaining 31st St SE?
31st St SE is owned and maintained by City/Municipal Highway Agency.
How old is 31st St SE and does age affect safety?
31st St SE was built in 1975, making it 51 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.