Wis. Admin. Code Department of Transportation Trans 204.03 - Town road standards

(1) The minimum design standards for each of the town road improvement levels are as shown in the following tables:

TABLE A-RECONSTRUCTION

TRAFFIC VOLUME			ROADWAY WIDTH DIMENSIONS IN FEET
Design Class	Current ADT	Design Speed MPH	Traveled Way	Shoulder	Roadway
T1	Under 250	40	20	3	26
T2	250-750	50	22	4	30
T3	Over 750	55	24	6	36

TABLE B RESURFACING AND RE CONDINIONING

TRAFFIC VOLUME			ROADWAY WIDTH DIMENSIONS IN FEET
Design Class	Current ADT	Design Speed MPH	Traveled Way	Shoulder	Roadway
TR1	Under 250	-	18	2	22
TR2	250 -400	40	20	2	24
TR3	401 -750	50	22	2	26
TR4	Over 750	55	22	4	30

Note: Examples of resurfacing and reconditioning improvements which may be appropriate for existing town roads include, but are not limited to, pavement rehabilitation; widening lanes and shoulders; replacing bridge elements to correct structural deficiencies; bridge deck overlays; bridge and culvert replacement; and other related improvements such as minor grading, subgrade work and correction of drainage problems.

(2) The geometry of the town road shall be designed to safely accommodate vehicles traveling at the design speed selected for the road improvement.

(3) The minimum design standards for existing town bridges are as shown in the following table:

TABLE C- EXISTING BRIDGES

CURRENT TRAFFIC VOLUME ADT	USABLE BRIDGE WIDTH
Under 400	Traveled way
400 - 750	Traveled way plus 1 foot each side
Over 750	Traveled way plus 2 feet each side

(4) Bridge replacement, rehabilitation or widening is required where a bridge is either load posted or has a usable width that is less than the traveled way width. Bridge replacement or widening should be evaluated if the usable bridge width is less than the values shown in Table C. If widening of the traveled way is planned as part of the town road improvement, the usable bridge width should be compared to the approaches after they are widened to determine whether or not bridge replacement or widening should be evaluated.

(5) The minimum design standards for new bridges on town roads are as shown in ch. Trans 214.

Notes

Wis. Admin. Code Department of Transportation Trans 204.03

Cr. Register, September, 1992, No. 441, eff. 10-1-92.