historicbridges.org

https://historicbridges.org· First analyzed 17 May 2026· Updated 17 May 2026

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historicbridges.org

Mobile

Sponsored

Hosting Provider

DreamHost

dreamhost.com

IP Address

75.119.203.128

Site Location

🇺🇸 United Statesvia ip

Server Location

🇺🇸 Portland, United States

ASN

AS26347

Organization

DreamHost

Server

Apache

CDN

Cloudflare

WAF

Cloudflare

Nameservers

alec.ns.cloudflare.com.bella.ns.cloudflare.com.

Performance

100

Core Web Vitals

Weight

First Contentful Paint

551 ms10%

Speed Index

716 ms10%

Largest Contentful Paint

—25%

Total Blocking Time

0.0 ms30%

Cumulative Layout Shift

0.00025%

2.2 MB

46 requests

0–49

50–89

90–100

Architecture Stack

Monolithic

⚙️ SSR

Infrastructure

Hosting

DreamHost

CDN

Cloudflare

Technology Stack

6 Technologies Detected

Analytics

Libraries

Other

Web Servers

SEO Analysis

D56/100

Meta Tags9/15

Content10/12

Headings3/8

Technical18/25

E-E-A-T0/7

Images2/7

Links5/5

URL5/5

Social0/5

Freshness0/4

Mobile1/4

Indexability3/3

historicbridges.orghistoricbridges.org

Historic Bridges .org

Historic bridges resource with photographs and information for bridges in North America. Includes in-depth articles about types in general.

Title Length21 chars

Recommended: 50-60 chars (~121px / 580px)

Description Length139 chars

Recommended: 120-160 chars

Issues (1)

• Missing H1 tag — every page should have exactly one H1

12 issues found

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Crawlability

Sitemap

Type: standard

21,838 URLs

robots.txt

266 rules

Local SEO

Local Search Readiness

13/100

Poor

5 11 2

This site doesn't appear to be a local business. Local SEO signals are optional for non-local websites.

Sponsored

AI & LLM Readiness

F23/100

Bot Access

17/25

Machine Read.

1/25

Schema Data

0/25

Citation

5/25

AI Bot Access

10/14 accessible

AI Search

OAI-SearchBot

PerplexityBot

Claude-SearchBot

Gemini-Deep-Research

DuckAssistBot

Training

GPTBot

ClaudeBot

Google-Extended

Meta-ExternalAgent

Bytespiderinfo

Amazonbot

Applebot-Extended

CCBotinfo

Fetch

ChatGPT-User

Machine Readability

llms.txt

llms-full.txt

Semantic HTML

Heading Hierarchy

Text ratio:14%

Words:5,806

Token eff.:Excessive

Structured Data

No Schema

Citation Readiness

Opening Summary

Descriptive Headings

Canonical URL

Open Graph0/3

Twitter Card0/3

Language Tag

Publish Date

Author Info

Lists

Tables

TL;DR / Summary

About Page Link

Recommendations (12)

AI readiness recommendation preview...

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Accessibility

WCAG 2.1 Compliance

Evaluates how accessible your website is for users with disabilities, based on WCAG 2.1 guidelines. Checks images, forms, keyboard navigation, ARIA roles, and color contrast.

52/100

Passed

Critical

Warnings

Images & Alt Text

7/20

Checks if images have descriptive alt text for screen readers and visually impaired users.

Semantic Structure

7/20

Evaluates proper use of HTML5 semantic elements (header, nav, main, footer) and heading hierarchy.

Forms & Inputs

10/15

Verifies form fields have labels, error messages are clear, and inputs are properly associated.

Color & Contrast

15/15

Tests text-to-background color contrast ratios against WCAG AA/AAA minimum requirements.

Keyboard & Focus

7/15

Ensures all interactive elements are reachable and operable via keyboard (tab, enter, escape).

ARIA & Roles

6/15

Checks correct use of WAI-ARIA attributes (roles, states, properties) for assistive technologies.

4 recommendations

•Accessibility recommendation preview...

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Carbon Footprint

SWDM v4 · Eco-Score

Carbon emissions estimated using the Sustainable Web Design Model v4 (SWDM v4). Factors in data center, network, and device energy across new and returning visitors. Grade thresholds based on HTTP Archive percentiles.

45/100

230 mg

CO₂e / view

2.2 MB

Page Weight

50%

Cleaner Than

New Visitor

263 mg

Returning (cached)

131 mg

Annual (10K/mo)

27.6 kg

Emission Segments

Data Center

11 mg

Network

68 mg

Device

151 mg

Resource Breakdown

JavaScript

36.9 KB

Images

2.1 MB

CSS

83.4 KB

HTML

35.7 KB

Green Hosting Verified

DreamHost

Provider Match

3 recommendations

•Carbon footprint recommendation preview...

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Security Score

21%Critical

Interactive

HTTPS

No WAF

89d

Certificate Details

Type

Domain Validated (DV)

Certificate Authority

Let's Encrypt

Key Algorithm

RSA (2048 bit)

Signature

SHA-256 with RSA

TLS Version

TLSv1.3

HTTP Protocol

HTTP/2

Valid From

17.05.2026

Valid Until

15.08.2026

Subject Alternative Names (2)

historicbridges.orgwww.historicbridges.org

SHA-256 Fingerprint

8A:88:C0:55:B2:DC:38:27:F7:5E:C6:0B:6B:C8:00:67:84:A6:47:58...

Top Recommendations

Security recommendation preview

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HTTP Headers

Developer Console

cache-control

🟡 600s(max-age=600)

content-encoding

📦 Gzip(gzip)

content-type

text/html; charset=UTF-8

date

Sun, 17 May 2026 17:39:05 GMT

expires

Sun, 17 May 2026 17:49:05 GMT

server

Apache

Good Warning Issue

Email Infrastructure

Custom Mail Server

Score

SPF

DKIM

DMARC

MX Records (3)

6b0f453a.21.ik2.com

6b0f453a.22.ik2.io

6b0f453a.23.ik2.eu

Domain Information

historicbridges.org

Domain Age

20y 6m

Created

29.10.2005

Expires

29.10.2026

Last Updated

15.04.2026

Registrar

DreamHost, LLC

DNSSEC

Not Enabled

Privacy & Compliance

Cookie Consent Banner

Mobile Compatibility

Viewport & Responsive Test

Tests how well your website works on mobile devices. Checks viewport configuration, responsive layout, touch targets, font readability, and simulates rendering across different screen sizes.

51/100

Mobile Friendly4 breakpoints

Viewport Meta

The viewport meta tag tells mobile browsers how to scale the page. Without it, mobile devices render at desktop width.

Responsive Design

Uses CSS media queries or flexible layouts to adapt content to different screen sizes automatically.

Touch Icons

Apple touch icons and favicons displayed when users add the site to their home screen on mobile devices.

Readable Font Size

Base font size should be at least 16px on mobile to ensure text is readable without zooming.

Relative Units

Using em, rem, %, or vw instead of fixed px values allows content to scale properly across screen sizes.

No H-Scroll Risk

No elements wider than the viewport that would cause horizontal scrolling on mobile devices.

Tap Targets OK

Interactive elements (buttons, links) are at least 48x48px with enough spacing to prevent accidental taps.

No Fixed Widths

No elements with fixed pixel widths that could overflow on smaller screens and break the layout.

Viewport

width=660

3 recommendations

•Mobile compatibility recommendation preview...

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Typography & Readability

Verdana

WCAG Partial

56/100

Readability

/30

21/30

16px · LH --

Hierarchy

/20

8/20

WCAG

/25

14/25

2.58:1 min contrast

Performance

/25

13/25

2 fonts · 1 req

Heading Font

Verdana

Sans

Body Font

Verdana

Sans16px

Contrast Ratio

2.58:1

6 issues

Reading Comfort

~40 CPL

Narrow lines

24px

20px

16px

✅ Excellent readability: 16px body text is ideal for all devices.

⚠️ Hard to read: Flesch score 49/100. Simplify sentences for wider reach.

⚠️ Partial contrast: 6 elements below WCAG AA threshold (min 2.6:1).

❌ Missing H1: Every page should have exactly one H1 element for SEO and accessibility.

✅ Lean font stack: 2 font families keeps load times fast.

⚠️ Missing font-display: swap — users may see invisible text while fonts load (FOIT).

Buy on MyFontsFlesch 49

Color Palette

6 unique colors

Light

#f2f6f9

Background· 73%

#8ca6cc

Primary· 7.9%

#bfd2db

Secondary· 6.6%

#8cc6bb

Secondary· 5.1%

#606ea0

Secondary· 4.7%

#e5ece6

Secondary· 2.7%

Business & Marketing Stack

2 Tools Detected

Growing

Behavior Analytics

Google AnalyticsFree

User behavior and product analytics

Social Media

Facebook SDKFree

Social widgets and sharing tools

Sponsored

Scripts & Styles

14 Resources

Scripts

Styles

Async

Defer

Top Script Sources

static.addtoany.com(4)js(2)graph.facebook.com(2)bridges(1)googletagmanager.com(1)

Website Identity

historicbridges.org

20 years old

Location detected: 🇺🇸 United Statesvia ip

DreamHost, LLCen

Social Profiles

Facebook

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Last analyzed: 17 May 2026 at 17:39

Historical Analysis & Change Tracking