Angkorean bridges

Angkorean Bridges
Several bridges from the Angkorean Empire are extant and have been in use until recently. Now they are for mocy and pedestrians only, and bypass bridges for cars.

Kampong Kdei Bridge = Spean Praptos 13.1266, 104.3392
https://en.wikipedia.org/wiki/Spean_Praptos
The longest corbeled stone-arch bridge in the world 87 m (check on google maps satellite view: 85 m from Naga to Naga). North of hwy6, can be spotted between trees from bus or car when driving between Siem Reap and Phnom Penh.

The view above is the same as on older (still in circulation) 5000 Riel notes.

Spean Toap 13.9044, 103.5318
In Oddar Meanchchay province, west of hwy 68, on the way to O'Smach border crossing. Check on google maps satellite view: 144 m, but start and end not clear. So this would be the longest corbeled arch bridge in the world. Have to measure length next time I pass.

Update: https://cne.wtf/2021/08/25/clearing-around-the-longest-angkorian-bridge/ says 151 m long.

Spean Thma in Angkor Wat 13.4462, 103.8796
https://en.wikipedia.org/wiki/Spean_Thma
Ruin overgrown by trees.

Spean Memay in Angkor Wat 13.4454, 103.7612
https://www.angkor-temples-in-cambodia.com/spean-memay.html
Near Angkor Wat, outside the payable area. Not much to see, picture from above link:

Update: https://christianpfc.blogspot.com/2023/12/cycling-around-siem-reap-nov2023.html

Ta Ong Bridge 13.4219, 104.4068
https://helloangkor.com/attractions/spean-ta-ong/
Picture from above link:

Dozens of small bridges
On the way from Siem Reap to Phnom Penh, I noticed several small Angkorean bridges, all north of hwy6. Look closely at google maps and you will notice that the road used to lead over the bridge (one lane), but now the hwy (two lanes) makes a bypass. Here an example at 13.1767, 104.2483, screenshot from google maps street view:

Most have no name, Ta Meas Bridge is an exception.

A comprehensive list of Angkorean bridges can be found at
https://beyondangkor.org/index.php/Category:Ancient_Bridge
To the best of my knowledge, there are no Angkorean corbeled-arch bridges in Thailand.

Corbeled Arch
The ancient Khmer did not know true arches. Look closely and you find there are only lintels and corbeled arches. https://en.wikipedia.org/wiki/Corbel_arch More about arches here: https://civiconcepts.com/blog/type-of-arches

Picture from above link via https://in.pinterest.com/pin/21-different-types-of-arches-in-construction--740279257504785512/  (Pinterest links to the article, and google picture search leads to the article, but the picture is not in the article.)

Thanks to a friend for aerial pictures by drone.

Update 4aug2023:

Copyright 2023 ChristianPFC except linked pictures