FHWA NBI 2024 Inspection record Public-domain dataset

E36

Carrying E36 over STEIN CREEK

084132401, Tama, Iowa

Data updated May 2026

FHWA NBI record, refreshed with each annual release.

Poor
28 t Inventory load rating

Bridge Snapshot: E36

The E36 bridge in Tama, Iowa carries E36 over STEIN CREEK. It was built in 1959, making it 67 years old today. The structure is built primarily of concrete continuous and spans 3 sections, stretching 38.7 meters (127 feet) end to end. Daily traffic averages 314 vehicles, placing it in the lower-traffic tier of Iowa bridges. It is owned and maintained by County Highway Agency.

The latest FHWA inspection records show a deck rating of 4/9, superstructure at 4/9, substructure at 4/9. The weakest component sits in poor condition. A component scored 4 or below, placing this bridge in the federal Poor condition category rather than declaring it unsafe or closed. Its NBI inventory load rating is 27.8 metric tons.

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

How E36 compares

▼ 3.1
Load rating vs Iowa average (30.9 t)
Bottom 40%
Lower load rating than 60% of Iowa bridges
307
Bridges in Tama · 100 in Poor condition
E36 27.8 t
Iowa average 30.9 t

Live comparison across Iowa.

Historical Sufficiency Rating

PlainBridge-computed
57.9 / 100 - historical 50–79.9 band
Structural adequacy /55
26.8
Serviceability /30
19.2
Essentiality /15
13.9
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 How the historical reference is calculated.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

Deck
4/9
Poor (1–4)
Superstructure
4/9
Poor (1–4)
Substructure
4/9
Poor (1–4)
Inventory Load Rating
27.8 t
NBI inventory level (metric tons)
Overall Condition
Poor

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

Structural Details

Year Built
1959
Material
Concrete Continuous
Number of Spans
3
Structure Length
38.7 m (127 ft)
Deck Width
10.4 m (34 ft)
Owner
County Highway Agency
Avg Daily Traffic
314 vehicles/day
Structure Number
000000000049790

Condition Analysis

  • The deck (driving surface) is in poor condition (4/9), showing advanced deterioration that may require priority repair.
  • At 4/9, the superstructure (beams and supports above the deck) is in poor shape, with advanced wear flagged for priority repair.
  • At 4/9, the substructure (piers and abutments) is in poor shape, with advanced wear flagged for priority repair.

How to read this record

E36 is in the federal Poor condition category. That is a component-based result, not a closure order.

  • NBI condition ratings reflect the latest record in this annual dataset, not a live status. Current routine inspection intervals are risk-based.
  • Understand what Poor condition does and does not mean before drawing conclusions. Poor condition explained
  • Compare E36 against other structures in Tama and across Iowa. Iowa 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 E36?

E36 in Tama, Iowa has a deck rating of 4/9, superstructure rating of 4/9, and substructure rating of 4/9 on the FHWA's 0–9 scale.

How often is E36 inspected?

E36'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 314 vehicles per day.

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

FHWA retired that reported status beginning with the 2018 archive. E36 is currently shown as Poor condition from its component ratings; that category is not a live closure or safety decision.

What is the inventory load rating for E36?

E36 has an NBI inventory load rating of 27.8 metric tons.

Who is responsible for maintaining E36?

E36 is owned and maintained by County Highway Agency.

How old is E36 and does age affect safety?

E36 was built in 1959, making it 67 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.