Okla. Stat. tit. 69, § 69-662

A. A professional engineer registered by the State Board of

Licensure for Professional Engineers and Land Surveyors pursuant to

Section 475.1 et seq. of Title 59 of the Oklahoma Statutes, shall

approve projects that may be awarded to contractors by the boards of

county commissioners, Transportation Commission or by other federal

or state agencies under their normal competitive bidding procedures,

excluding prequalification of bidders. A “county-built” project may

be a road or bridge in whole or in part built with its own county

forces or entirely let to contract, but all costs associated are

payable.

B. County-built bridges using the County Bridge and Road

Improvement Fund shall meet or exceed the following criteria:

1. The bridge has been built according to the current edition

of the County Bridge Standards manual or from field notes drawn by a

registered professional engineer that provide the basic structural

requirements to achieve a load rating of H. twenty-three (23) tons

or greater. Field notes may be handwritten specifications or

sketches which have been stamped or signed;

Oklahoma Statutes - Title 69. Roads, Bridges, and Ferries Page 92

2. The finished bridge shall achieve a twenty-three-ton or

greater rating. The rating criteria shall be determined by the

National Bridge Inventory and approved by the Department of

Transportation for bridges twenty (20) feet or more in length;

3. The subsurface foundation of the bridge shall meet the

minimum guidelines established by using approved engineering

methods, details of which shall be kept as shop notes;

4. The finished bridge shall have a minimum roadway width of

twenty-four (24) feet; and

5. Materials used in the construction of the bridge shall meet

or exceed the specifications for materials as specified in the

current edition of the County Bridge Standards or certified in

writing by the engineer or supplier.

C. Prior to construction of the bridge, a county may request

that construction supervision be provided by the Circuit Engineering

District of which the county is a member to ensure quality control

and quality assurance.