Preliminary Design Report

WIN	10000.00	TOWN	Anytown

BRIDGE NO.	1234	BRIDGE	Common Bridge

Project Manager	Name

DESIGNED BY	ABC	DATE	Click here to enter a date.

Approved by	Date

Approved by	DATE

PROGRAM SCOPE:	Choose an item

PROGRAM DESCRIPTION:	Replacement of deficient wearing surface on Common Bridge (#1234) over Raging River, located 0.16 of a mile easterly of Route 9. This bridge is over 20’ in length.

Project Recommendation: Place 3” bituminous wearing surface on ¼” membrane waterproofing, rehabilitating existing concrete deck as needed. Modify existing expansion joints to accommodate thicker wearing surface and replace seals. Replace two broken bridge rail posts.

Bridge Roadway Section: Two 11’ lanes with 4’ shoulders for a total curb-to-curb width of 30’.

Spans	70’-70’	Skew	30° ahead on left

JURISDICTION	State Highway	NHS	Yes

FUNCTIONAL CLASSIFICATION	Choose an item	CORRIDOR PRIORITY	3

TRAFFIC:	2013	AADT	1,000	ACCIDENT DATA, CRF	1.0

2033	AADT	1,200	DHV	200	POSTED SPEED	45 mph

Complete Streets: Click or tap here to enter text.

Utilities: Verizon, Anytown Sewer, Anytown Water, State Cable, CMP

Maintenance of Traffic: Maintain two-way traffic with staged construction and temporary traffic signals for one construction season.

Construction Year: 2015	Advertising Date: January 2014

APPROVED DESIGN EXCEPTIONS: Bridge width is less than State Standards in order to match existing corridor width.

Municipal/State Agreement Required? Specify type of agreement if required

Environmental Impact: No in-stream work, lead paint will be contained and disposed of properly.

ROW Required: None.

Comments by Engineer of Design: Click here to enter text.

Existing Bridge

Year Built	1936	Span Lengths 60'-60'	Curb to Curb Width 24'

Type of Superstructure: Two-span continuous structure with painted steel beams, composite cast-in-place deck, bituminous wearing surface and membrane waterproofing, and concrete bridge rail.

General Condition: Steel beams are in fair condition with minor section loss along with rusting and extensive failing paint. Concrete deck is in fair condition with some spalling and leakage on the bottom. Wearing surface is in poor condition with extensive cracking and patching. Bridge rail is in very poor condition with much cracking and patching.

Type of Substructure: Mass concrete abutments on H-piles. Mass concrete pier on piles.

General Condition: The concrete for both abutments is cracked and spalled and in poor overall condition. The north wing on abutment #1 is tipped forward slightly. The pier concrete is in fair condition with some cracking and spalling.

Load Ratings:	Operating	Inventory

HL-93	40 Tons	30 Tons

Rating Factor	1.00	1.00

Legal Loads

Controlling Configuration: 1	40 Tons

Rating Factor	1.00

Controlling Member:	Interior floor beam in flexure

See Appendix F for load rating summary

STRUCTURALLY DEFICIENT	Choose an item.	FUNCTIONALLY OBSOLETE	N/A

Maintenance Problems: Cracking of bituminous wearing surface. Cracking, spalling, and vehicular damage of concrete bridge rail.

Maintenance Work: Repeated patching of wearing surface and repair of bridge rail.

Previous Structure: A timber covered bridge on granite abutments.

Other Comments: This is a non-historic bridge located in a historic district.