KDOT Highway & Bridge Inspection Procedures 3

Question 1

What does a negative superstructure appraisal rating of N3 (N/A) signify in the NBI coding system?

Accepted Answer

The structure has no deck, such as a culvert

Answer

NBI code N for superstructure appraisal indicates not applicable, used for structures like culverts that have no conventional superstructure.

Question 2

During highway pavement inspection in Kansas, which distress type is characterized by interconnected cracks forming polygonal shapes?

Accepted Answer

Block cracking

Answer

Block cracking forms interconnected cracks creating large rectangular or polygonal blocks, typically caused by asphalt shrinkage rather than load fatigue.

Question 3

A KDOT inspector is checking expansion joints on a bridge during summer. Joints that appear completely closed should prompt concern about:

Accepted Answer

Potential for bridge deck buckling during further heating

Answer

When expansion joints close completely in summer heat, there is no remaining capacity to accommodate further thermal expansion, risking buckling of the bridge deck.

Question 4

Which fracture-critical member (FCM) designation means that failure of the member would likely cause collapse of the bridge?

Accepted Answer

Non-redundant steel tension members

Answer

Fracture-critical members are non-redundant steel tension members whose failure would likely cause a portion of or the entire bridge to collapse.

Question 5

When inspecting approach slabs on a Kansas highway bridge, settlement or 'bump at the end of the bridge' most often results from:

Accepted Answer

Consolidation or erosion of fill beneath the slab

Answer

Settlement of approach slabs typically results from consolidation, erosion, or washout of the embankment fill beneath the slab, creating a void.

(KDOT) Certified Kansas Department of Transportation Inspector Practice Test

(KDOT) Certified Kansas Department of Transportation Inspector Practice Test

KDOT Highway & Bridge Inspection Procedures 3